Dr. Wendy Troxel returns to the podcast today to discuss the significant impact of sleep on relationships and mental health with Matt. Offering actionable strategies for couples facing inevitable sleep disruptions, Dr. Troxel emphasizes the importance of communication, suggesting that couples anticipate sleep challenges, share responsibilities, and use tools like the "slangry" label to recognize and manage sleep-deprived behaviors. She also highlights the importance of timing conversations and creating positive shared experiences, even when sleep-deprived, to maintain relationship quality.

Dr. Troxel further debunks common myths about sleep and relationships, including the misconception that sleeping apart signifies a troubled relationship or that snoring is merely a nuisance. She stresses the need for couples to understand and respect their chronotypes—whether they are early birds or night owls—and to find harmonious solutions that accommodate their different sleep patterns. By prioritizing sleep and maintaining open communication, couples can enhance their relationship, reduce conflict, and improve overall well-being - sleep is not just a personal health issue but a critical factor in sustaining healthy, connected relationships.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

Are sleep troubles keeping you up at night? Matt used to be a skeptic about meditation, but 7 years ago, he tried it using a fantastic meditation app called ‘Calm’, and it transformed his sleep! Now, he meditates for 10 minutes before bedtime every night! He’s also partnered with Calm who have been generous enough to offer his podcast listeners an exclusive 40% discount on their premium subscription! All you have to do is go to calm.com/mattwalker and take advantage of this incredible deal! Head on over now and improve your sleep today!

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Another great sponsor of the show is AG1, a comprehensive nutritional drink trusted by thousands worldwide, including Matt! For nearly four years and counting, he has relied on

This week, Matt shines his spotlight on the intriguing topic of melatonin use for individuals living with autism spectrum disorder (ASD). While melatonin has been discussed in previous episodes in relation to sleep enhancement and antioxidant properties, today's focus is on a recent meta-analysis that examines its effectiveness in treating sleep disorders specifically in those with ASD. This deep dive is prompted by new data and the pervasive sleep challenges faced by individuals with autism, making it a timely and important discussion.

Matt explores the nuanced mechanisms and varied sleep problems associated with ASD, emphasizing the importance of personalized treatment plans. The episode highlights how melatonin can potentially aid in increasing total sleep time and improving sleep onset latency, though it shows variable results in sleep efficiency. Listeners are reminded that while melatonin offers promising possibilities, it is not a one-size-fits-all solution and must be considered carefully, particularly in terms of dosage and individual conditions. Additionally, the discussion includes potential adverse effects and the importance of medical supervision when using melatonin as a treatment for children with ASD.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

Support for today’s podcast also comes from Magic Spoon. I’ve always loved cereal, but focusing on wellness meant giving it up due to unhealthy ingredients. Enter Magic Spoon, introduced to me by Dr. Peter Attia. Their high-protein, low-sugar cereals transformed my mornings, and now, they've added Magic Spoon Treats, packed with 11g of protein, 1g of sugar, and only 4 net carbs in flavors including chocolate, peanut butter, and strawberry milkshake. And thanks to their generosity, you can now take advantage of a special offer: Get $5 off at magicspoon.com/mattwalker. Enjoy!

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Another sponsor this week is the biochemical electrolyte drink company LMNT, and they are very kindly offering eight free sample packs when you purchase any one of their orders at drinklmnt.com/mattwalker. LMNT is an electrolyte sports drink that I can get behind - it's created from the basis of science, and it has no sugar, no coloring, and no artificial ingredients – all qualities that are so important to maintaining your blood biochemical balance. If you want to give LMNT a try, just head on over to drinklmnt.com/mattwalker and get your eight free samples with your first purchase. 

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

Matt and Eti team up again today for another entertaining and informative AMA episode. This time around, they dive into the intriguing world of lunar cycles and their potential influence on sleep patterns and dreams. From ancient beliefs to modern scientific findings, our duo unpacks the subtle yet fascinating impact of the moon. They then go on to explore the calming effects of weighted blankets on children and adults alike, revealing how deep touch pressure therapy enhances sleep quality and emotional regulation.

Exploring how lunar phases and weighted blankets impact sleep, Matt and Eti delve into studies showing subtle changes in sleep patterns around the full moon and debunk others questioning any association between lunar phases and sleep disruption. Their conversation then shifts to the benefits of weighted blankets, emphasizing their effectiveness for insomnia, ADHD, and anxiety. By weaving together the science behind lunar cycles and deep touch pressure therapy, this episode offers a comprehensive understanding of these captivating sleep phenomena.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

One of the podcast’s new sponsors is Levels, the groundbreaking continuous glucose monitor that keeps track of your blood sugar levels day and night. Whether you're curious about your body's response to different foods or seeking to enhance your sleep quality, Levels has the answers. Matt’s been using it for almost 2 years now, and has actually made changes to his diet in response to the powerful individual information Levels provides. If you’re interested, visit levels.link/Mattwalker now to grab an exclusive podcast offer of two free months of this impactful service, and take charge of your health journey today!

Another exciting new sponsor is MUD\WTR, the ultimate coffee alternative that delivers a natural morning pick-me-up without caffeine jitters. Their unique blend of cacao and mushrooms offers a delightful and gentle lift to kickstart your day, as Matt can attest! Plus, now when you head over to mudwtr.com/MattWalker, as a podcast listener, you'll receive a free frother and coconut creamer samples! Experience the delicious world of MUD\WTR, valued sponsors of our podcast, and elevate your mornings with this fantastic offer!

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

Dr. Chris Barnes from the University of Washington's Foster School of Business joins Matt to discuss the often overlooked importance of sleep in boosting workplace productivity and ethical decision-making. Together, they delve into how sleep deprivation affects job performance, the impact sufficient sleep has on business environments and organizational success, and the hidden costs of sleep loss.

Dr. Barnes presents compelling evidence on how businesses can use sleep as a strategic asset to create a healthier, more productive work culture. He and Matt address challenges that disrupt sleep patterns and the strategies companies can implement to counter these issues. Emphasizing the significant benefits of prioritizing sleep, their discussion challenges the notion that less sleep means more productivity, offering practical steps for enhancing employee well-being and performance. 

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

He’s also partnered with Calm who have been generous enough to offer his podcast listeners an exclusive 40% discount on their premium subscription! All you have to do is go to calm.com/mattwalker and take advantage of this incredible deal! Head on over now and improve your sleep today!

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. 

Another sponsor this week is the biochemical electrolyte drink company LMNT, and they are very kindly offering eight free sample packs when you purchase any one of their orders at drinklmnt.com/mattwalker. If you want to give LMNT a try, just head on over to drinklmnt.com/mattwalker and get your eight free samples with your first purchase. 

Links:

Dr. Barnes on X:  @chris24barnes

Dr. Barnes’ UW page: https://foster.uw.edu/faculty-research/directory/christopher-barnes/

Dr. Barnes’ LinkedIn: https://www.linkedin.com/in/christopher-barnes-7079373/?trk=prof-samename-name

“Why healthy sleep is good for business”:  https://pubmed.ncbi.nlm.nih.gov/31450119/

Matt introduces his series examining the complex relationship between sleep and cannabis, exploring both the historical context and contemporary scientific perspectives. The narrative begins with Dr. W.B. O'Shaughnessy's canine experiments in 1849, tracing the evolution to the foundational work on cannabis for sleep conducted by Drs. Clendinning and Bradbury. Despite anecdotal reports suggesting cannabis enhances sleep, the scenario is complicated by factors such as regulatory constraints, variable product quality, and the potential long-term health implications of cannabis usage.

In discussing the impact of cannabis on sleep, Matt elucidates the interactions among THC, CBD, and the endocannabinoid system. Initial benefits may include improved sleep onset and efficiency, but chronic use is often associated with negative outcomes such as increased nocturnal awakenings and reduced sleep quality in the latter half of the night. Additionally, Matt explores the challenges associated with discontinuing cannabis use, including the risk of THC dependency for sleep induction, highlighting the necessity for evidence-based approaches and individualized decision-making in using cannabis as a sleep aid.

Matt's analysis extends to the global context of cannabis consumption, advocating for well-informed choices amidst its growing popularity and the dynamic landscape of scientific research.

Please be aware that Matt is not a medical professional, and the content of this podcast should not be regarded as medical advice or as prescriptive in any manner.

This episode is sponsored by the Tim Ferriss Show, celebrating its ten-year anniversary with over 1 billion downloads since 2023. The show is renowned for Tim's profound interviews with a diverse range of guests—from Hollywood legends like Arnold Schwarzenegger and Jamie Foxx to lesser-known figures who have captivated Tim's attention—each episode is designed to offer deep insights and stimulate thoughtful discussions.  Tune in to Tim.blog or look for the Tim Ferriss Show today, available wherever you find your podcasts.

The good people at InsideTracker are also one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Another sponsor of the show is AG1, a comprehensive nutritional drink trusted by thousands worldwide, including Matt! For nearly four years and counting, he has relied on AG1 to fuel his post-workout routine with its powerhouse blend of over 75 essential minerals, vitamins, probiotics, and prebiotics, meticulously crafted to support your daily nutritional needs. AG1 is registered and approved by the Therapeuti

This week, Matt dives deep into the complexities of REM Sleep Behavior Disorder (RBD), a condition where individuals physically act out their dreams due to the absence of normal muscle paralysis during REM sleep. He meticulously breaks down the mechanisms of normal REM sleep, where the brainstem induces muscle atonia to prevent dream enactment, contrasting it with the failure of this system in RBD cases. 

Further expanding on the topic, Matt explores the etiology, diagnosis, treatment options, and prognosis of REM Sleep Behavior Disorder. He outlines the primary, drug-induced, and secondary types of RBD, with a focus on the idiopathic category, linking its occurrence to neurodegeneration and the accumulation of alpha-synuclein protein in the brainstem. Treatment strategies include lifestyle adjustments and pharmacological interventions like melatonin and clonazepam, aiming to reduce injury risks. 

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

Are sleep troubles keeping you up at night? Matt used to be a skeptic about meditation, but 7 years ago, he tried it using a fantastic meditation app called ‘Calm’, and it transformed his sleep! Now, he meditates for 10 minutes before bedtime every night! He’s also partnered with Calm who have been generous enough to offer his podcast listeners an exclusive 40% discount on their premium subscription! All you have to do is go to calm.com/mattwalker and take advantage of this incredible deal! Head on over now and improve your sleep today!

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Another sponsor this week is the biochemical electrolyte drink company LMNT, and they are very kindly offering eight free sample packs when you purchase any one of their orders at drinklmnt.com/mattwalker. LMNT is an electrolyte sports drink that I can get behind - it's created from the basis of science, and it has no sugar, no coloring, and no artificial ingredients – all qualities that are so important to maintaining your blood biochemical balance. If you want to give LMNT a try, just head on over to drinklmnt.com/mattwalker and get your eight free samples with your first purchase. 

Eti is back for another AMA episode with Matt to answer questions that have been submitted over the last little while. Today’s installment dives into a number of topics including the intricate relationship between sleep and pregnancy, exploring how sleep disturbances impact pregnant women and the postnatal period. Additionally, the hormone prolactin, essential for milk production, is highlighted for its sleep-promoting benefits during the postnatal phase, illustrating nature's intricate balance between nurturing new life and ensuring the mother's rest. 

Their discussion also touches on whether pregnancy sleep disturbances are all part of preparing mom for baby’s arrival which, of course, can further disrupt schedules, citing the very few biological exceptions where sleep is actually sacrificed for survival. Our experts also undertake  a light-hearted exploration of "eye gunk" (rheum), demystifying its composition and reassurance that its presence is a normal part of sleep hygiene rather than an indicator of sleep quality. They finish up by responding to a question regarding the connection between sex, masturbation, and sleep, which you absolutely do not want to miss.

Tune in today, and don’t forget to send in any sleep questions you may have - Matt and Eti might just answer them in a future episode!

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

One of the podcast’s new sponsors is Levels, the groundbreaking continuous glucose monitor that keeps track of your blood sugar levels day and night. Whether you're curious about your body's response to different foods or seeking to enhance your sleep quality, Levels has the answers. Matt’s been using it for almost 2 years now, and has actually made changes to his diet in response to the powerful individual information Levels provides. If you’re interested, visit levels.link/Mattwalker now to grab an exclusive podcast offer of two free months of this impactful service, and take charge of your health journey today!

Another exciting new sponsor is MUD\WTR, the ultimate coffee alternative that delivers a natural morning pick-me-up without caffeine jitters. Their unique blend of cacao and mushrooms offers a delightful and gentle lift to kickstart your day, as Matt can attest! Plus, now when you head over to mudwtr.com/MattWalker, as a podcast listener, you'll receive a free frother and coconut creamer samples! Experience the delicious world of MUD\WTR, valued sponsors of our podcast, and elevate your mornings with this fantastic offer!

As always, if you have thoughts or feedback you’d like to share, please rea

In today's podcast episode, Matt welcomes back Dr. Michael Gradisar to delve into the evolving understanding of screens and sleep. Initially holding the belief in the detrimental effect of screen light on sleep, Matt finds this notion challenged by Dr. Gradisar's research, which emphasizes a more nuanced perspective. Their discussion highlights the shift from simplistic concerns about screen use to acknowledging the multifaceted influences on sleep, including content and individual differences. 

Dr. Gradisar's experiments, such as exposure to violent video games and bedtime displacement monitoring, emphasize the complexity of the relationship between technology use and sleep, stressing the need for personalized approaches to addressing sleep issues. His dialogue with Matt underscores the importance of scientific inquiry in challenging and refining commonly held beliefs about technology and sleep, advocating for a nuanced understanding that considers individual behaviors and differences. Furthermore, both speakers encourage researchers to engage with industry and the public, translating findings into practical advice for improving sleep hygiene and promoting healthier sleep practices.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

The good people at InsideTracker are one of the sponsors of this week's episode. For a very limited time, InsideTracker is giving you 50% off their bundles. Plus, they’re offering 30% off everything else in their store. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Also sponsoring this week are those fine people at Athletic Greens, and they are generously offering 3 benefits for anyone who uses the above link for their first order: 1) a discount on your order; 2) a one-year free supply of vitamin D; 3) five free travel packs. Athletic Greens is a nutrition drink that combines a full complement of antioxidants, minerals, and biotics, together with essential vitamins. Matt’s been using it for several years now because he’s serious about his health, and because he did his research on the science and ingredients in Athletic Greens and thinks its scientific data can be taken as ground truth.

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

Links:

Wink Sleep: https://winksleep.online/

Michael Gradisar LinkedIn: https://www.linkedin.com/in/michael-gradisar-ba2184b6/?originalSubdomain=au

Matt explores menopause and sleep disturbances today, noting the impact of hormonal changes, including a drop in estrogen and progesterone, and the role of hot flashes in disturbed sleep. He enumerates different types of sleep impairments related to menopause such as insomnia, sleep-disordered breathing, restless leg syndrome, and various sleep stage disruptions. Treatment options are discussed, with an emphasis on hormone replacement therapy, though controversy surrounding this approach is acknowledged. He outlines alternative treatments, including medication and cognitive behavioral therapy for insomnia. The episode underscores the effect of menopause on sleep and the importance of education and support for these issues.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

Are sleep troubles keeping you up at night? Matt used to be a skeptic about meditation, but 7 years ago, he tried it using a fantastic meditation app called ‘Calm’, and it transformed his sleep! Now, he meditates for 10 minutes before bedtime every night! He’s also partnered with Calm who have been generous enough to offer his podcast listeners an exclusive 40% discount on their premium subscription! All you have to do is go to calm.com/mattwalker and take advantage of this incredible deal! Head on over now and improve your sleep today!

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Another sponsor this week is the biochemical electrolyte drink company LMNT, and they are very kindly offering eight free sample packs when you purchase any one of their orders at drinklmnt.com/mattwalker. LMNT is an electrolyte sports drink that I can get behind - it's created from the basis of science, and it has no sugar, no coloring, and no artificial ingredients – all qualities that are so important to maintaining your blood biochemical balance. If you want to give LMNT a try, just head on over to drinklmnt.com/mattwalker and get your eight free samples with your first purchase. 
As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

It’s another AMA episode and Dr. Eti Ben Simon returns to not only share some of her own sleep routines, but also to help listeners gain a rare insight into Matt's personal sleep habits as they respond to a listener’s query. Renowned for not sharing much, if anything, regarding what he considers his “boring” self, Matt is coaxed into offering a candid exploration of his bedtime routines, shedding light on both his successes and challenges in achieving optimal rest. From his dedication to regular sleep schedules to his strategies for managing stress-induced insomnia, Matt’s uncharacteristic willingness to share personal anecdotes, coupled with Eti’s invaluable contributions, humanize the often complex realm of sleep science for listeners here today.

Through their engaging dialogue, our hosts emphasize the importance of individualized approaches to sleep hygiene, highlighting the significance of understanding and optimizing one's unique sleep patterns. By delving into each other’s personal experiences with occasional insomnia and proactive efforts to prioritize sleep, our hosts reveal valuable insights into practical strategies for enhancing sleep quality and overall well-being. This exchange not only enriches listeners' understanding of sleep science but also underscores the transformative potential of personalized sleep practices in fostering health and vitality.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

One of the podcast’s new sponsors is Levels, the groundbreaking continuous glucose monitor that keeps track of your blood sugar levels day and night. Whether you're curious about your body's response to different foods or seeking to enhance your sleep quality, Levels has the answers. Matt’s been using it for almost 2 years now, and has actually made changes to his diet in response to the powerful individual information Levels provides. If you’re interested, visit levels.link/Mattwalker now to grab an exclusive podcast offer of two free months of this impactful service, and take charge of your health journey today!

Another exciting new sponsor is MUD\WTR, the ultimate coffee alternative that delivers a natural morning pick-me-up without caffeine jitters. Their unique blend of cacao and mushrooms offers a delightful and gentle lift to kickstart your day, as Matt can attest! Plus, now when you head over to mudwtr.com/MattWalker, as a podcast listener, you'll receive a free frother and coconut creamer samples! Experience the delicious world of MUD\WTR, va

Matt Walker welcomes his dear friend, the epic sleep researcher and clinician, Dr. Michael Gradisar, to the podcast to join him in exploring the profound influence of light on sleep quality. Dr. Gradisar's groundbreaking research and clinical proficiency in pediatric sleep disorders and circadian rhythm disruptions have reshaped the field, guiding both scientific comprehension and practical interventions. His conversation with Matt here today delves into the intricate interplay among light exposure, circadian rhythms, and sleep, highlighting the therapeutic promise of light therapy, particularly in addressing insomnia.

Throughout their dialogue, our two experts challenge prevailing misconceptions about screen time and its purported negative impact on sleep. Advocating for a nuanced understanding of how light influences sleep patterns, they dispel the notion of screen light as a malevolent disruptor. Instead, they underscore the multifaceted nature of light's effects and stress the importance of tailored interventions that align with individual circadian rhythms. Navigating the intersection of scientific research and real-world application, Matt and Michael encourage listeners to reconsider common myths and embrace evidence-based strategies for optimizing sleep hygiene.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

The good people at InsideTracker are one of the sponsors of this week's episode. For a very limited time, InsideTracker is giving you 50% off their bundles. Plus, they’re offering 30% off everything else in their store. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Also sponsoring this week are those fine people at Athletic Greens, and they are generously offering 3 benefits for anyone who uses the above link for their first order: 1) a discount on your order; 2) a one-year free supply of vitamin D; 3) five free travel packs. Athletic Greens is a nutrition drink that combines a full complement of antioxidants, minerals, and biotics, together with essential vitamins. Matt’s been using it for several years now because he’s serious about his health, and because he did his research on the science and ingredients in Athletic Greens and thinks its scientific data can be taken as ground truth.

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

Links:

Wink Sleep: https://winksleep.online/

Michael Gradisar LinkedIn: https://www.linkedin.com/in/michael-gradisar-ba2184b6/?originalSubdomain=au

This week, Matt explores the intricate connection between sleep and weight, shedding light on the alarming reality of how inadequate sleep contributes to weight gain. He emphasizes the staggering correlation between the rise in obesity rates and the decline in sleep duration over the past six decades, backed by meta-analyses showcasing the significant associations between insufficient sleep and heightened obesity risk. Our host delves into experimental studies revealing how sleep deprivation disrupts the balance of appetite-regulating hormones like leptin and ghrelin, leading to increased hunger and calorie intake, particularly from snacks. Notably, the episode highlights Dr. Gerda Pot's groundbreaking research at King's College, which underscores the link between sleep deprivation and heightened calorie consumption, offering valuable insights into the impact of sleep on dietary habits.

Amidst the concerning findings, the episode offers a glimmer of hope by discussing Dr. Esra Tasali's innovative study from the University of Chicago. Dr. Tasali's research presents a compelling narrative, demonstrating that extending sleep by just 1.2 hours each night can lead to a remarkable reduction in energy intake, ultimately facilitating weight loss without necessitating changes in exercise or diet. This study serves as a beacon of optimism, illustrating the transformative potential of prioritizing quality sleep in the battle against obesity. By elucidating the profound impact of sleep on appetite regulation and weight management, today’s episode podcast provides invaluable insights into the vital role of sleep in maintaining overall health and well-being.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

Are sleep troubles keeping you up at night? Matt used to be a skeptic about meditation, but 7 years ago, he tried it using a fantastic meditation app called ‘Calm’, and it transformed his sleep! Now, he meditates for 10 minutes before bedtime every night! He’s also partnered with Calm who have been generous enough to offer his podcast listeners an exclusive 40% discount on their premium subscription! All you have to do is go to calm.com/mattwalker and take advantage of this incredible deal! Head on over now and improve your sleep today!

The good people at InsideTracker are another sponsor of this week's episode. For a very limited time, InsideTracker is giving you 50% off their bundles. Plus, they’re offering 30% off everything else in their store. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Another sponsor this week is the biochemical electrolyte drink company  LMNT</&l

In yet another informative and entertaining AMA episode, Matt and Doctor Eti Ben-Simon delve into the variety of sleep-related questions uppermost in listeners’ minds . Matt begins by explaining that THC, the main psychoactive component in cannabis, can help individuals fall asleep initially but disrupts sleep patterns and circadian rhythms with chronic use. This can lead to increased brain temperature, tolerance, dependence, and decreased REM sleep, impacting emotional regulation and overall health. Emerging data on cannabis's potential benefits for sleep apnea are inconclusive.

Matt and Eti also discuss white noise's impact on sleep, particularly in noisy environments, as studies show it can help people fall asleep faster and improve sleep efficiency, though results vary. On melatonin supplementation, they offer a vast amount of information, including a caution against overuse due to dosage inconsistencies and potential long-term effects. Our duo goes on to address the concept of "enough sleep," noting the average person needs 7-8 hours, but optimal sleep varies. Excessive sleep often indicates poor quality and health issues, potentially increasing mortality risk. Wrapping up, this episode emphasizes understanding sleep aids, their effects on sleep quality, and achieving optimal sleep health.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

I have to tell you, launching my sleep-related merchandise sales was incredibly smooth, thanks to our new sponsor Shopify and their integrated sales and inventory system. And now, just for you,  Shopify is generously offering an exclusive trial at shopify.com/mattwalker. So, be sure to stop in at shopify.com/mattwalker to start your exclusive journey now! 

Support for today’s podcast also comes from Magic Spoon. I’ve always loved cereal, but focusing on wellness meant giving it up due to unhealthy ingredients. Enter Magic Spoon, introduced to me by Dr. Peter Attia. Their high-protein, low-sugar cereals transformed my mornings, and now, they've added Magic Spoon Treats, packed with 11g of protein, 1g of sugar, and only 4 net carbs in flavors including chocolate, peanut butter, and strawberry milkshake, And, thanks to their generosity, you can now take advantage of a special offer: Get $5 off at magicspoon.com/mattwalker. Enjoy!

Another exciting sponsor is Levels, the groundbreaking continuous glucose monitor that keeps track of your blood sugar levels day and night. Whether you're curious about your body's response to different foods or seeking to enhance your sleep quality, Levels has the answers. Matt’s been using it for almost 2 years now, and has actually made changes to his diet in response to the powerful individual information Levels provides. If you’re interested, visit levels.link/Mattwalker now to grab an exclusive podcast offer of two free months of this impactful service!

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

Dr. Eti Ben Simone is back with Matt Walker to delve into a range of intriguing topics surrounding sleep, circadian rhythms, and the impact of shift work on our health, all within the engaging context of today’s installment of their increasingly popular Ask Me Anything (AMA) sessions. Their conversation begins by exploring the intriguing link between the APOEε4 genotype and sleep disturbances, particularly concerning Alzheimer's disease. It's noteworthy that individuals carrying the APOEε4 variant, especially those with two copies, face a heightened risk of developing Alzheimer's. Surprisingly, research shows that these individuals tend to experience more deep non-REM sleep, typically associated with better memory. This paradoxical discovery hints at the possibility that sleep may serve as a compensatory mechanism to counteract the memory decline associated with APOEε4.

The discussion then shifts to the consequences of shift work on our health, a topic of great interest among the podcast's audience. Shift work disrupts our circadian rhythm, the internal clock governing various facets of our health, including our sleep patterns. Quick transitions between different shifts, akin to frequent experiences of jet lag, can prove particularly detrimental. Such rapid shift rotations contribute to increased rates of insomnia and diminished sleep quality, with some night shift workers reporting sleep disturbances nearing 40%. The disruption of the circadian rhythm impacts not only our sleep but also a multitude of physiological functions. This underscores the paramount importance of maintaining a consistent sleep schedule for our overall well-being.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

One of the podcast’s new sponsors is Levels, the groundbreaking continuous glucose monitor that keeps track of your blood sugar levels day and night. Whether you're curious about your body's response to different foods or seeking to enhance your sleep quality, Levels has the answers. Matt’s been using it for almost 2 years now, and has actually made changes to his diet in response to the powerful individual information Levels provides. If you’re interested, visit levels.link/Mattwalker now to grab an exclusive podcast offer of two free months of this impactful service, and take charge of your health journey today!

Another exciting new sponsor is MUD\WTR, the ultimate coffee alternative that delivers a natural morning pick-me-up without caffeine jitters. Their unique blend of cacao and mushrooms offers a delightful and gentle lift to kickstart your day, as Matt can attest! Plus, now when you head over to mudwtr.com/MattWalker, as a podcast listener, you'll receive a free frother and coconut creamer samples! Experience the delicious world of MUD\WTR, valued sponsors of our podcast, and elevate your mornings with this fantastic offer!

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

Matt’s back this week to delve into the intriguing phenomenon known as Exploding Head Syndrome (EHS). A genuine and significant sleep disorder, EHS is part of the broader category of parasomnias, which includes various sleep-related disorders like night terrors and sleepwalking. The core experience of EHS involves patients perceiving sudden, loud, and shocking noises, akin to explosions or gunshots, as they are either falling asleep or waking up from sleep. These hallucinations are distressing, evoking fear and anxiety, even though they do not cause physical pain. Despite its dramatic name and symptoms, EHS is often misunderstood and wrongly perceived as dangerous or life-threatening, but it poses no physical harm to hearing or brain health.

The diagnosis of EHS relies on patient-reported experiences, as there is no definitive test for it. Medical professionals rule out other potential causes through objective evaluations like EEG recordings or MRI scans, ultimately reaching a diagnosis through exclusion. The emotional impact of EHS can be long-lasting, leading to a strong aversion to sleep, known as somnophobia. Matt shares some of the theories behind the underlying mechanisms, such as neurological abnormalities in the brainstem and the role of stress and anxiety. He notes that treatment options include cognitive behavioral therapy (CBT) to manage stress and anxiety, and various medications, although none have been formally approved for EHS. Join our host for this fascinating exploration into this very real syndrome that is guaranteed to blow your mind.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Also sponsoring this week are those fine people at Athletic Greens, and they are generously offering 3 benefits for anyone who uses the above link for their first order: 1) a discount on your order; 2) a one-year free supply of vitamin D; 3) five free travel packs. Athletic Greens is a nutrition drink that combines a full complement of antioxidants, minerals, and biotics, together with essential vitamins. Matt’s been using it for several years now because he’s serious about his health, and because he did his research on the science and ingredients in Athletic Greens and thinks its scientific data can be taken as ground truth.

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

In this second installment of their fascinating conversation together, Matt Walker and Michael Grandner continue their discussion regarding the crucial role of sleep in the lives of athletes. Together they delve into the unique challenges athletes face, such as irregular schedules, early mornings, late-night competitions, and travel across time zones, all of which can disrupt their sleep patterns. 

Dr. Grandner emphasizes the need for athletes to "bank sleep" by ensuring they get sufficient rest before challenging periods and maintaining a consistent sleep schedule. He also recommends strategies like exposure to natural light and physical activity during the day to help athletes adapt to different time zones and create a sleep-conducive environment in hotel rooms. Additionally, our duo acknowledge that some elite athletes may require slightly longer sleep durations due to increased recovery needs and their age group, which includes late adolescents and young adults. While they don't prescribe a fixed duration like 10-11 hours for all athletes, they stress the importance of prioritizing sleep as a fundamental component of an athlete's training and performance regimen. They also touch upon the impact of caffeine and creatine on sleep and highlight the efforts of organizations like the NCAA and the International Olympic Committee in addressing sleep issues and providing guidelines to support athletes' well-being.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way. 

Are sleep troubles keeping you up at night? Matt used to be a skeptic about meditation, but 7 years ago, he tried it using a fantastic meditation app called ‘Calm’, and it transformed his sleep! Now, he meditates for 10 minutes before bedtime every night! He’s also partnered with Calm who have been generous enough to offer his podcast listeners an exclusive 40% discount on their premium subscription! All you have to do is go to calm.com/mattwalker and take advantage of this incredible deal! Head on over now and improve your sleep today!

The good people at InsideTracker are another sponsor of this week's episode. For a very limited time, InsideTracker is giving you 50% off their bundles. Plus, they’re offering 30% off everything else in their store. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Another sponsor this week is the biochemical electrolyte drink company LMNT, and they are very kindly offering eight free sample packs when you purchase any one of their orders at drinklmnt.com/mattwalker.

In this week’s episode, Dr. Michael Grandner joins Matt to explore the critical role of sleep in athletic performance. Together, they emphasize that sleep is not just about physical rest but also plays a significant role in mental performance, decision-making, and motivation.

Dr. Grandner discusses how sleep is essential for various aspects of athletic success, including physical performance, mental performance, recovery, and mental health. He highlights that sleep isn't just a passive activity; it actively contributes to integrating daytime experiences, optimizing decision-making, and enhancing coordination.

The podcast also addresses the misconception that sacrificing sleep is a badge of commitment in sports. Both speakers stress the importance of sleep as a foundational element, comparable to food, that touches every aspect of an athlete's performance. They discuss studies demonstrating how sleep deprivation not only impacts physical abilities but also impairs decision-making and motivation. The conversation underscores the universality of sleep's influence on our ability to make better choices, whether we're athletes or not.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way. 

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Also sponsoring this week are those fine people at Athletic Greens, and they are generously offering 3 benefits for anyone who uses the above link for their first order: 1) a discount on your order; 2) a one-year free supply of vitamin D; 3) five free travel packs. Athletic Greens is a nutrition drink that combines a full complement of antioxidants, minerals, and biotics, together with essential vitamins. Matt’s been using it for several years now because he’s serious about his health, and because he did his research on the science and ingredients in Athletic Greens and thinks its scientific data can be taken as ground truth.

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

For more from Dr. Michael Grandner, follow him on Twitter @michaelgrandner

For information about the Sleep and Health Research Program, visit the lab website.

For media and information requests, meeting requests, and consultation, contact Dr. Grandner.

Links:

American Academy of Sleep Medicine

NCAA Mental Health Best Practices

In this podcast, Matt explores the fascinating topic of yawning. He begins by pointing out that although we all yawn and assume it's a sign of sleepiness, science hasn't provided a definitive answer regarding its purpose. Matt delves into the etymology of the word "yawn" and describes the five distinct steps involved in the yawning reflex, shedding light on its physiological process.

Matt then introduces three leading scientific theories explaining why we yawn. The first theory suggests that yawning helps cool the brain and enhances alertness by drawing in cooler air. The second theory proposes that contagious yawning synchronizes group behavior, as observed in wild animal studies. The third theory centers on regulating oxygen and carbon dioxide levels in the body, although it faces scrutiny due to research findings. Ultimately, Matt leans towards the cooling theory as the primary function of yawning.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way. 

Are sleep troubles keeping you up at night? Matt used to be a skeptic about meditation, but 7 years ago, he tried it using a fantastic meditation app called ‘Calm’, and it transformed his sleep! Now, he meditates for 10 minutes before bedtime every night! He’s also partnered with Calm who have been generous enough to offer his podcast listeners an exclusive 40% discount on their premium subscription! All you have to do is go to calm.com/mattwalker and take advantage of this incredible deal! Head on over now and improve your sleep today!

The good people at InsideTracker are one of the sponsors of this week's episode. For a very limited time, InsideTracker is giving you 50% off their bundles. Plus, they’re offering 30% off everything else in their store.  InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Another sponsor this week is the biochemical electrolyte drink company LMNT, and they are very kindly offering eight free sample packs when you purchase any one of their orders at drinklmnt.com/mattwalker. LMNT is an electrolyte sports drink that I can get behind - it's created from the basis of science, and it has no sugar, no coloring, and no artificial ingredients – all qualities that are so important to maintaining your blood biochemical balance. If you want to give LMNT a try, just head on over to

Matt's back, and this time he's tackling the perennial debate: Is the snooze button a friend or foe when it comes to your sleep and overall health? He shines a spotlight on an intriguing study led by Dr. Tina Sundelin and her team - one that challenges our conventional wisdom about snooze buttons. Surprisingly, their research reveals that snooze button usage is quite common, especially among night owls and younger folks. What's even more unexpected is that snoozing may not have the detrimental impact on mood, cognitive performance, or cortisol levels that we once thought. However, there's a catch: snooze users end up with about 20% less sleep in the last half-hour of their sleep cycle.

While Matt acknowledges these thought-provoking findings, he remains cautious and stresses the importance of cherishing natural, uninterrupted sleep patterns. He suggests that more extensive, long-term research may be needed to fully understand the potential consequences of snooze button habits on our well-being. Along the way, Matt sprinkles in fascinating tidbits about the history of alarm clocks and shares some unconventional alarm clock designs that add humor and curiosity to the conversation. Whether you're a die-hard snooze button fan or someone on a quest to enhance your morning routine, this episode serves up valuable insights into the science of sleep and waking up.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way. 

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Also sponsoring this week are those fine people at Athletic Greens, and they are generously offering 3 benefits for anyone who uses the above link for their first order: 1) a discount on your order; 2) a one-year free supply of vitamin D; 3) five free travel packs. Athletic Greens is a nutrition drink that combines a full complement of antioxidants, minerals, and biotics, together with essential vitamins. Matt’s been using it for several years now because he’s serious about his health, and because he did his research on the science and ingredients in Athletic Greens and thinks its scientific data can be taken as ground truth.

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

Dr. Eti Ben Simon joins Matt once again this week to continue their AMA session where they bring their vast amount of knowledge and expertise to bear in responding to a variety of listener questions. They begin by delving into the intricate relationship between sleep, hormones, and the female reproductive cycle, providing invaluable insights into women's health. Together, they examine the challenges faced during the perimenopausal and menopausal periods, characterized by erratic hormonal fluctuations and sleep disturbances. Noting that hormone replacement therapy (HRT), particularly bioidentical HRT, has emerged as a potential solution, they also review the controversy surrounding HRT, underscoring the importance of informed choices regarding women's health. 

The complex relationship between sleep and chronic pain is also explored, unveiling the fact that chronic pain, which affects a substantial portion of the population, can profoundly impact sleep quality. The episode also touches upon the intriguing topic of subjective versus objective sleep perception, where individuals' self-assessments of their sleep often differ from objective measurements. This discrepancy has implications not only for those with chronic pain but also for anyone seeking to understand the true quality and impact of their sleep. Our hosts go on to detail the intriguing relationship between psychedelics, ketamine, and sleep, examining developments that may very well open doors to potential therapeutic applications and a better understanding of the mind's mysteries.

Expert responses to the questions on everyone’s mind - this is an episode you simply can’t afford to miss.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way. 

The good people at InsideTracker are one of the sponsors of this week's episode. Fora very limited time, InsideTracker is giving you 50% off their bundles. Plus, they’re offering 30% off everything else in their store. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Another sponsor this week is the biochemical electrolyte drink company LMNT, and they are very kindly offering eight free sample packs when you purchase any one of their orders at drinklmnt.com/mattwalker. LMNT is an electrolyte sports drink that I can get behind - it's created from the basis of science, and it has no sugar, no coloring, and no artificial ingredients – all qualities that are so important to maintaining your blood biochemical balance. If you want to give LMNT a try, just head on over to drinklmnt.com/mattwalker and get your eight free samples with your first purchase. 

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

In today’s thoroughly engaging episode, Matt joins forces with Dr. Eti Ben Simon from his Center for Human Sleep Science to embark upon an enlightening "Ask Me Anything" (AMA) session, addressing a wide array of questions related to sleep. Together, they explore such topics as sleep differences between males and females, the impact of sleep trackers on our rest, and the intriguing dynamics of sleep patterns based on biological sex. 

The journey continues as Matt responds to queries regarding the terrain of sleep across the human lifespan, from restless newborns to the complexities of aging. This comprehensive overview sheds light on the evolving landscape of sleep, emphasizing the importance of knowledge in optimizing sleep quality throughout one's life. With expert guidance and fascinating discussions, this episode promises to leave listeners with a newfound appreciation for the science of sleep and its profound impact on our well-being.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way,  nor prescriptive in any way. 

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Also sponsoring this week are those fine people at Athletic Greens, and they are generously offering 3 benefits for anyone who uses the above link for their first order: 1) a discount on your order; 2) a one-year free supply of vitamin D; 3) five free travel packs. Athletic Greens is a nutrition drink that combines a full complement of antioxidants, minerals, and biotics, together with essential vitamins. Matt’s been using it for several years now because he’s serious about his health, and because he did his research on the science and ingredients in Athletic Greens and thinks its scientific data can be taken as ground truth.

Are sleep troubles keeping you up at night? Matt used to be a skeptic about meditation, but 7 years ago, he tried it using a fantastic meditation app called ‘Calm’, and it transformed his sleep! Now, he meditates for 10 minutes before bedtime every night! He’s also partnered with Calm who have been generous enough to offer his podcast listeners an exclusive 40% discount on their premium subscription! All you have to do is go to calm.com/mattwalker and take advantage of this incredible deal! Head on over now and improve your sleep today!

As always, if you have feedback you’d like to share, please reach out to Matt on Instagram.

In today’s memorable episode, Matt examines the intriguing connection between sleep and motor memory. Beginning with an explanation of the two main types of human memory - fact-based memory and procedural memory, which includes motor/skill memories - he notes that, contrary to popular belief, motor/skill memories aren't stored in our muscles but primarily within the brain. Matt also describes his journey into researching motor memories which started at Queen's Medical Centre in Nottingham, England, where he observed stroke patients recovering lost muscle control and speech during rehabilitation.

Matt recounts a pivotal moment in his life when he encountered a pianist who would struggle with a piece of music in the evening but be able to play it flawlessly the next morning after a night's sleep. This revelation ignited Matt’s 16-year journey, resulting in his groundbreaking research showing that practicing a skill followed by a full night's sleep is the secret to memory enhancement. Today, our host shares details of this research and goes on to explain sleep spindles - bursts of activity during stage two non-REM sleep that play a crucial role in enhancing memory, particularly during the last 2-3 hours of the night. Ultimately, Matt's extensive findings, as shared here today, emphasize that if you want to excel in motor/skill memory, "if you don't snooze, you lose." So, listen in today and learn all about the power of prioritizing sleep for optimal performance.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way. 

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Another sponsor this week is the biochemical electrolyte drink company LMNT, and they are very kindly offering eight free sample packs when you purchase any one of their orders at drinklmnt.com/mattwalker. LMNT is an electrolyte sports drink that I can get behind - it's created from the basis of science, and it has no sugar, no coloring, and no artificial ingredients – all qualities that are so important to maintaining your blood biochemical balance. If you want to give LMNT a try, just head on over to drinklmnt.com/mattwalker and get your eight free samples with your first purchase. 

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

In this episode, Matt delves into the intriguing realm of the "caffeine nap." He explores the idea of combining a short nap with caffeine to enhance mental performance and wakefulness. The episode kicks off with a dilemma – in the afternoon, when faced with fatigue, should you opt for coffee or a nap? Matt reveals that the answer isn't a simple choice between the two but a potent mix of both.

Matt elucidates the science behind the caffeine nap, emphasizing the ideal timing for each element. He touches upon studies comparing the impacts of caffeine, naps, and caffeine naps on cognitive functions and memory recall. It's revealed that a caffeine nap—consuming caffeine right before a brief nap—can offer significant benefits in reducing sleep inertia and boosting cognitive performance. Additionally, Matt delves into how supplementary factors, such as washing with cold water and exposure to natural light, can augment the effects of the caffeine nap.

However, Matt underscores the importance of employing this method judiciously, particularly concerning the potential disruption of nighttime sleep from caffeine intake later in the day. He advocates for the tactical use of caffeine naps during times when an urgent boost is required. The episode wraps up by spotlighting various ways to maximize the effectiveness of a caffeine nap and sheds light on its potential advantages for athlete recuperation and prowess.

It's crucial to mention that Matt is not a licensed medical professional. Consequently, none of the content in this podcast should be perceived as medical guidance or advice in any capacity.

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Also sponsoring this week are those fine people at Athletic Greens, and they are generously offering 3 benefits for anyone who uses the above link for their first order: 1) a discount on your order; 2) a one-year free supply of vitamin D; 3) five free travel packs. Athletic Greens is a nutrition drink that combines a full complement of antioxidants, minerals, and biotics, together with essential vitamins. Matt’s been using it for several years now because he’s serious about his health, and because he did his research on the science and ingredients in Athletic Greens and thinks its scientific data can be taken as ground truth.

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

The Science of Shared Sleep: Dr. Wendy Troxel on Bedtime and Relationships

This week, Matt is joined by Dr. Wendy Troxel the celebrated sleep and behavioral scientist whose book, Sharing the Covers: Every Couple's Guide to Better Sleep, highlights the significant impact of sleep on relationships. Revealing that 61% of adults sleep with a partner, Dr. Troxel emphasizes the often-overlooked social aspect of sleep and its implications for couple dynamics. As she notes, sleep arrangements have historically varied widely, from communal sleeping in the Middle Ages to separate beds in the Victorian era for hygiene and status reasons. These changing practices reflect evolving societal norms and beliefs about intimacy and health.

Troxel also explores how modern sleep disruptions, such as snoring, differing sleep preferences, and work schedules, can affect relationships. She stresses the importance of open communication and mutual understanding of chronotypes—whether one is a morning lark or a night owl—in managing sleep compatibility. Recognizing and addressing these issues can lead to better sleep quality and, consequently, a healthier relationship. As you will hear, Dr. Troxel's research underscores that there's no one-size-fits-all solution, and advocates for personalized strategies to improve both sleep and relationship health.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

Links:

Dr. Troxel’s Website (including social media, Sharing the Covers, TED and TEDx Talks): https://www.wendytroxel.com/

Are sleep troubles keeping you up at night? Matt used to be a skeptic about meditation, but 7 years ago, he tried it using a fantastic meditation app called ‘Calm’, and it transformed his sleep! Now, he meditates for 10 minutes before bedtime every night! He’s also partnered with Calm who have been generous enough to offer his podcast listeners an exclusive 40% discount on their premium subscription! All you have to do is go to calm.com/mattwalker and take advantage of this incredible deal! Head on over now and improve your sleep today!

The good people at InsideTracker are also one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Another great sponsor of the show is AG1, a comprehensive nutritional drink trusted by thousands worldwide, including Matt! For nearly four years and counting, he has relied on AG1 to fuel his post-workout routine with its powerhouse blend of over 75 essential minerals, vitamins, probiotics, and prebiotics, meticulously crafted to support your daily nu

In this engaging podcast episode, Matt delves into the world of polyphasic sleep – the practice of dividing sleep into multiple short naps throughout the day. The episode starts by exploring the historical origins of polyphasic sleep, from the concept of phases within a 24-hour sleep cycle to the motivations behind adopting unconventional sleep patterns for increased productivity.

Matt explains various polyphasic sleep schedules, such as the Uberman, Everyman, and Triphasic schedules, which involve segmented sleep periods interspersed with short naps. While proponents claim benefits like enhanced sleep quality, improved brain function, and better health, Walker breaks down the scientific evidence to reveal a different reality. Multiple studies suggest that polyphasic sleep doesn't offer the promised benefits. Instead, it often leads to disrupted sleep stages, impaired cognitive function, mood decline, and adverse effects on health, including blood sugar and cardiovascular issues.

In conclusion, Matt emphasizes the importance of prioritizing traditional, consolidated sleep patterns and warns against the potential pitfalls of attempting to hack the sleep cycle. While individual experiences may vary, the weight of scientific evidence suggests that polyphasic sleep might be more of a sleep-hacking myth than a genuine solution for better health and productivity.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way. 

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Another sponsor this week is the biochemical electrolyte drink company LMNT, and they are very kindly offering eight free sample packs when you purchase any one of their orders at drinklmnt.com/mattwalker. LMNT is an electrolyte sports drink that I can get behind - it's created from the basis of science, and it has no sugar, no coloring, and no artificial ingredients – all qualities that are so important to maintaining your blood biochemical balance. If you want to give LMNT a try, just head on over to drinklmnt.com/mattwalker and get your eight free samples with your first purchase. 

Further reading if desired

Scientific  of polyphasic sleep: https://www.sciencedirect.com/science/article/pii/S2352721821000309

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

Matt and special guest, Dr. Michael Grandner, continue their dialogue regarding the multifaceted world of sleep, insomnia, and their intersections with various life aspects. Together, they unveil the gender-based variations in susceptibility to insomnia, attributing higher rates among women to their willingness to express challenges. Their conversation navigates through sleep difficulties during life transitions like menopause, exploring the impact of physical discomfort and emotional changes. 

The podcast then takes a cultural dive, examining how race and ethnicity shape sleep patterns, revealing concerning trends in sleep disparities over time. The episode also underscores cognitive behavioral therapy for insomnia as the go-to approach, surpassing medication due to its efficacy and lower risks. The role of melatonin is demystified, clarifying its function as a time-signaling molecule that influences sleep timing. Myths surrounding melatonin's effects and dosages are debunked using relatable comparisons. With their engaging discussions and relatable insights here today, Matt and Dr. Grandner offer listeners invaluable guidance on sleep health, cultural influences, and effective strategies to address insomnia.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way. 

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Also sponsoring this week are those fine people at Athletic Greens, and they are generously offering 3 benefits for anyone who uses the above link for their first order: 1) a discount on your order; 2) a one-year free supply of vitamin D; 3) five free travel packs. Athletic Greens is a nutrition drink that combines a full complement of antioxidants, minerals, and biotics, together with essential vitamins. Matt’s been using it for several years now because he’s serious about his health, and because he did his research on the science and ingredients in Athletic Greens and thinks its scientific data can be taken as ground truth.

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

For more from Dr. Michael Grandner, follow him on Twitter @michaelgrandner

For information about the Sleep and Health Research Program, visit the lab website.

For media and information requests, meeting requests, and consultation, contact Dr. Grandner.

Links:

Society for Behavioral Sleep Medicine

UPENN CBT-I Directory

American Academy of Sleep Medicine

In the podcast, sleep expert Dr. Michael Grandner engages in a conversation with Matt about insomnia. They delve into the subject by defining what insomnia is, examining its causes, understanding its implications, and discussing potential remedies. An important distinction is made between short-term insomnia and chronic insomnia. They highlight that chronic insomnia often evolves into a standalone problem.

One of the major talking points is the significant impact of insomnia, which is believed to affect approximately one-third of the population. There is an emphasis on its connection to both physical and mental health. Some of the physical health problems linked to insomnia include diabetes, cardiovascular issues, and inflammation. However, it is in the realm of mental health that insomnia’s effect is most stark, especially in relation to depression and anxiety disorders. Alarmingly, it is noted that insomnia can triple the risk of suicide. It is clear that the treatment of insomnia is not just about increasing the amount of sleep but also enhancing the quality of sleep for overall health improvement.

Dr. Grandner doesn’t stop there; he further probes the complexities of insomnia and the phenomenon of conditioned arousal. He makes an insightful comment on how putting more effort into falling asleep can, counterintuitively, only increase stress levels. Furthermore, the conversation takes an interesting turn as they talk about how different factors like race, ethnicity, and societal influences can create disparities in sleep patterns. Another aspect Dr. Grandner touches upon is the distinct sleep challenges that women face, particularly during pregnancy and perimenopause. He also discusses how sleep can be disrupted by various factors such as medication and its timing.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way. 

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode.InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Another sponsor this week is the biochemical electrolyte drink company LMNT, and they are very kindly offering eight free sample packs when you purchase any one of their orders at drinklmnt.com/mattwalker. LMNT is an electrolyte sports drink that I can get behind - it's created from the basis of science, and it has no sugar, no coloring, and no artificial ingredients – all qualities that are so important to maintaining your blood biochemical balance. If you want to give LMNT a try, just head on over to drinklmnt.com/mattwalker and get your eight free samples with your first purchase. 

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

For more from Dr. Michael Grandner, follow him on Twitter @michaelgrandner

For information about the Sleep and Health Research Program, visit the lab website.

For media and information requests, meeting requests, and consultation, contact Dr. Grandner.

In today’s episode, Matt shines a spotlight on the science behind napping and explores the optimal nap duration for various cognitive benefits. He starts by introducing the concept of napping and its benefits for the brain and body, and then discusses sleep inertia, the groggy feeling upon awakening from a nap, and its potential impact on brain performance.

Matt walks through the dose-response curve of naps, starting with ultra-short power naps of five minutes or less, which show no evidence of sleep inertia but offer minimal cognitive benefits. He then progresses to 10-minute naps, which demonstrate improvements in alertness and sustained attention. The benefits continue to increase with 15-minute and 20-minute naps, enhancing alertness, concentration, and problem-solving abilities. However, sleep inertia becomes more noticeable with longer naps, such as 30-minute to 60-minute durations, although the cognitive benefits are more significant and long-lasting.

Lastly, Matt shares the origin of the term "power nap" and how it emerged from research conducted by Dr. David Dinges and Dr. Mark Rosekind for the Federal Aviation Authority (FAA) to combat sleep deprivation among pilots. They discovered the benefits of preemptive napping to build resilience against subsequent sleep deprivation during long-haul flights, leading to the adoption of the term "power nap" by the FAA.

Listen in today to gain valuable insights into the art and skill of napping, emphasizing the importance of finding the right nap duration to balance cognitive benefits and sleep inertia. #TheNapPodcast #NapScience #PowerNap

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way. 

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Also sponsoring this week are those fine people at Athletic Greens, and they are generously offering 3 benefits for anyone who uses the above link for their first order: 1) a discount on your order; 2) a one-year free supply of vitamin D; 3) five free travel packs. Athletic Greens is a nutrition drink that combines a full complement of antioxidants, minerals, and biotics, together with essential vitamins. Matt’s been using it for several years now because he’s serious about his health, and because he did his research on the science and ingredients in Athletic Greens and thinks its scientific data can be taken as ground truth.

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

In this second part of his series on sleep, free radicals, and antioxidants, Matt delves into the fascinating connection between sleep and oxidative stress. He begins by recapping the previous episode's discussion on free radicals and oxidative stress, highlighting the recent studies that have revealed one of the functions of sleep: to counteract the harmful effects of free radicals. 

Curiosity leads Matt to question why total sleep deprivation often leads to death in different species without a clear cause. The focus shifts to a groundbreaking study from Harvard, where researchers examined oxidative stress and free radical damage in fruit flies subjected to sleep deprivation. Surprisingly, the study revealed that the oxidative damage was concentrated in the gut rather than the brain or other major organ systems. Further analysis unveiled the detrimental consequences of the free radical accumulation in the gut, including DNA damage, cell death, and tissue necrosis. Additionally, the researchers discovered that certain antioxidants, notably melatonin, offered protection and prevented premature death caused by sleep deprivation. Matt emphasizes the importance of considering the findings with caution, as the experiments were conducted on flies and not yet explored in humans. Nonetheless, the study sheds light on the precise mechanisms linking sleep deprivation, oxidative stress, and the gut, providing valuable insights into the profound impact of sleep on overall health.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way. 

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Another sponsor this week is the biochemical electrolyte drink company LMNT, and they are very kindly offering eight free sample packs when you purchase any one of their orders at drinklmnt.com/mattwalker. LMNT is an electrolyte sports drink that I can get behind - it's created from the basis of science, and it has no sugar, no coloring, and no artificial ingredients – all qualities that are so important to maintaining your blood biochemical balance. If you want to give LMNT a try, just head on over to drinklmnt.com/mattwalker and get your eight free samples with your first purchase. 

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

In today’s episode, Matt takes us on a journey exploring the fascinating world of antioxidants and their link to sleep. The theory of free radical flux and its connection to sleep is introduced, shedding light on the role of antioxidants in combating oxidative stress. Through engaging storytelling and scientific evidence, Matt explains how free radicals can cause cellular damage and why sleep evolved as a mechanism to manage their burden. The research on mutant fruit flies reveals the impact of sleep duration on vulnerability to free radical damage, highlighting the importance of quality sleep for overall health. Our host concludes by teasing the next episode, where the mortal consequences of sleep loss will be unveiled. So, grab a cup of tea, get cozy, and join us in unraveling the secrets of sleep!

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way. 

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Also sponsoring this week are those fine people at Athletic Greens, and they are generously offering 3 benefits for anyone who uses the above link for their first order: 1) a discount on your order; 2) a one-year free supply of vitamin D; 3) five free travel packs. Athletic Greens is a nutrition drink that combines a full complement of antioxidants, minerals, and biotics, together with essential vitamins. Matt’s been using it for several years now because he’s serious about his health, and because he did his research on the science and ingredients in Athletic Greens and thinks its scientific data can be taken as ground truth.

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

On today’s episode, Matt discusses the concept of "catch-up sleep" and explores whether it effectively compensates for sleep deprivation during the week. The study featured in the episode focused on a group of participants who experienced short sleep during the week and attempted to make up for it with longer sleep on weekends. The findings revealed that despite the extra sleep on weekends, individuals were only able to recover 25% of their sleep debt. This highlights that sleep doesn't work like a bank, and accumulated sleep debt cannot be fully repaid by oversleeping on weekends.

Furthermore, the study uncovered other health effects of sleep deprivation, such as disruptions in the circadian rhythm, increased appetite and snacking, weight gain, and impaired blood sugar control. Matt emphasizes the importance of prioritizing consistent, quality sleep every night to maintain overall health and well-being, and he suggests breaking the cycle of sleep deprivation and adopting a balanced sleep routine that meets individual sleep needs. Ultimately, his goal here today is to address sleep debt, and, in the end, make sleep a fundamental human right.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way. 

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Another sponsor this week is the biochemical electrolyte drink company LMNT, and they are very kindly offering eight free sample packs when you purchase any one of their orders at drinklmnt.com/mattwalker. LMNT is an electrolyte sports drink that I can get behind - it's created from the basis of science, and it has no sugar, no coloring, and no artificial ingredients – all qualities that are so important to maintaining your blood biochemical balance. If you want to give LMNT a try, just head on over to drinklmnt.com/mattwalker and get your eight free samples with your first purchase. 

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

MW E50 Restless Leg Syndrome

Summary:

Restless Leg Syndrome (RLS) is  a neurological condition characterized by irresistible urges to move the muscles in the legs and arms, often accompanied by crawling, tingling, or burning sensations. A common sleep disorder affecting around 5% of the population, which translates to approximately 400 million individuals worldwide, its symptoms primarily occur at night, disrupting sleep quality and leading to fatigue.

RLS is linked to genetic factors and iron deficiency in the brain, rather than solely iron deficiency in the blood. The diagnosis of RLS is made through a specialist sleep doctor's evaluation based on symptoms and medical history. While there is no cure for RLS, there are treatment options available - medications targeting calcium channels, increasing dopamine levels, and even opioids may be prescribed. In addition, lifestyle changes such as reducing caffeine, alcohol, and tobacco intake, maintaining a regular sleep schedule, and practicing relaxation techniques, can also help manage symptoms. Dietary adjustments, including consuming iron-rich foods like beans, peas, poultry, seafood, and dark leafy greens, may provide additional support. Overall, seeking medical help from a sleep doctor is crucial for proper diagnosis and treatment of this common sleep disorder.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way. 

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Also sponsoring this week are those fine people at Athletic Greens, and they are generously offering 3 benefits for anyone who uses the above link for their first order: 1) a discount on your order; 2) a one-year free supply of vitamin D; 3) five free travel packs. Athletic Greens is a nutrition drink that combines a full complement of antioxidants, minerals, and biotics, together with essential vitamins. Matt’s been using it for several years now because he’s serious about his health, and because he did his research on the science and ingredients in Athletic Greens and thinks its scientific data can be taken as ground truth.

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

Today, Matt explores the fascinating realm of nightmares and the cutting-edge treatment known as Image Rehearsal Therapy (IRT). Nightmares, often associated with rapid eye movement sleep (REM sleep), can disrupt sleep quality and emotional well-being. However, IRT offers a unique approach to tackling nightmares by helping individuals envision alternative endings to their recurring dreams. By modifying and rehearsing these alternative scenarios, individuals can update their nightmare memories with more neutral or positive experiences. 

Delving into the science behind IRT, Matt showcases its potential to significantly reduce the frequency and severity of nightmares. Furthermore, he shares a groundbreaking study that investigates the use of sound cues during dream sleep to enhance the efficacy of IRT. The study's findings suggest that combining daytime rehearsal with nighttime memory reactivation could lead to even greater psychological improvement and long-lasting therapeutic benefits. As Matt concludes, while the study represents a promising step forward, further research is needed to fully explore the potential of this innovative approach to nightmare treatment.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way. 

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Another sponsor this week is the biochemical electrolyte drink company LMNT, and they are very kindly offering eight free sample packs when you purchase any one of their orders at drinklmnt.com/mattwalker. LMNT is an electrolyte sports drink that I can get behind - it's created from the basis of science, and it has no sugar, no coloring, and no artificial ingredients – all qualities that are so important to maintaining your blood biochemical balance. If you want to give LMNT a try, just head on over to drinklmnt.com/mattwalker and get your eight free samples with your first purchase. 

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

In today’s episode, Matt discusses the sleep disorder known as sleep apnea, focusing on its definition, prevalence, and the dangers it poses if left untreated. Sleep apnea is a breathing-related sleep disorder, with obstructive sleep apnea being the most common form. It occurs when the airway partially or fully collapses during sleep, leading to disrupted breathing and oxygen deprivation. Sleep apnea is alarmingly prevalent, affecting an estimated 12-20% of the population worldwide, with a higher risk for males, overweight individuals, smokers, and those leading sedentary lifestyles. 

The consequences of untreated sleep apnea can be severe, including an increased risk of developing dementia, cardiovascular disease, diabetes, and even a higher likelihood of falling asleep while driving. Matt emphasizes the importance of diagnosis and offers insights into clinical assessment methods, such as screening questionnaires and sleep recordings, to determine the presence and severity of sleep apnea. Treatment options include Continuous Positive Airway Pressure (CPAP) devices, mandibular advancement devices, and in extreme cases, surgical intervention. In the end, Matt urges listeners to prioritize their sleep health, seek help, get tested, receive appropriate treatment to improve their quality of life, and potentially extend their lifespan along the way.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Also sponsoring this week are those fine people at Athletic Greens, and they are generously offering 3 benefits for anyone who uses the above link for their first order: 1) a discount on your order; 2) a one-year free supply of vitamin D; 3) five free travel packs. Athletic Greens is a nutrition drink that combines a full complement of antioxidants, minerals, and biotics, together with essential vitamins. Matt’s been using it for several years now because he’s serious about his health, and because he did his research on the science and ingredients in Athletic Greens and thinks its scientific data can be taken as ground truth.

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

Matt and Dr. Eti Ben Simon are back today to answer more of your excellent questions with their latest AMA installment - #8!

They begin by delving into the intriguing world of lucid dreaming, explaining how it enables dreamers to become aware and even control their dreams, and move on to discussing the scientific methods used to study lucid dreaming, such as using eye movements as a form of Morse code to communicate with researchers. Through studies involving MRI scans, scientists have validated that the brain areas associated with movements become active during lucid dreams. 

Matt and Eti also provide valuable insights into sleep hygiene, emphasizing the importance of maintaining a regular sleep schedule and creating an optimal sleep environment. Additionally, our duo highlight unconventional tips such as avoiding naps if you struggle with sleep and taking a mental walk instead of counting sheep to help fall asleep. 

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

Today’s episode is sponsored by The Washington Post—your go-to for stellar reporting and utmost integrity. Here’s a scoop just for our listeners: snag the Washington Post for just $0.50/week for an entire year! Dash over to Matt's Special WaPo Offer to grab this sweet deal, and make The Washington Post your news haven for less than the price of a coffee each week.

The good people at InsideTracker are also one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you.

One of our partners for today's podcast is Element, spelled LMNT. The founders' expertise in physiology, biochemistry, and pharmacology ensures top quality. I use LMNT daily, in workouts and protein shakes, and I've arranged an exclusive deal for you: an 8-count free sample pack with any purchase. Visit DrinkLMNT.com/MattWalker to claim your sample, and enjoy balanced electrolytes without sugar!

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

This week, Matt introduces a new segment called "Hot Off the Press," where he covers the latest and most exciting studies in sleep science. And the topic of discussion for this first installment is a great one: excessive slumber - exploring the questions of whether one is getting enough sleep and if there is such a thing as too much sleep. Listen in today to find out if too much sleep can be harmful in the same way that too little sleep is, whether or not there may be an upper limit to the benefits of sleep, or if further research is necessary to provide a conclusive answer to either of these crucial questions. 

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way. 

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Another sponsor this week is the biochemical electrolyte drink company LMNT, and they are very kindly offering eight free sample packs when you purchase any one of their orders at drinklmnt.com/mattwalker. LMNT is an electrolyte sports drink that I can get behind - it's created from the basis of science, and it has no sugar, no coloring, and no artificial ingredients – all qualities that are so important to maintaining your blood biochemical balance. If you want to give LMNT a try, just head on over to drinklmnt.com/mattwalker and get your eight free samples with your first purchase. 

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

Matt returns with  Dr. Craig Kanapari to discuss sleep in teens and how biological and hormonal changes occur at a young age, usually around 11-13. The most clear determinant of sleep duration in a teen is wake time, and enforcing a wake time inappropriate to the teen's natural sleep period can lead to insomnia-like symptoms and create conflict. The single greatest threat to a teen's sleep schedule is early high school start times. California recently signed a law to address this, and other states are beginning to follow suit. 

They also discuss teenage sleep deprivation and the issues it leads to. They also explore the concept of  social jet lag as well as how teens often have their own devices and are allowed to keep their phones in their rooms. The conversation continues with the effects of chronic sleep deprivation on teenagers, including on academic performance and psychological effects such as depression and anxiety, as well as the health and safety implications, such as increased risk of car accidents. 

Lastly, they recount the relationship between kids and ADHD, sleep deprivation, and medication. Specifically how teens not getting enough sleep can masquerade as ADHD, how stimulants used to treat ADHD can affect nighttime sleep, and the issue of hypersomnia. It suggests that parents look out for their children's sleep duration and snoring, and if their child is struggling, not to forget about sleep as it is important for their health and wellbeing.

Today Matt’s discussion with  Dr. Craig Canapari continues, delving into the major changes in sleep that a child will go through from the ages of one to ten. This includes how regularity and appropriate sleep opportunities are important for getting good sleep, and potential medical issues that can arise from not getting enough sleep, such as snoring and restless leg disorder. They also discuss when during child development it can be wise to reduce napping and switch to monophasic (single nighttime) sleep bouts, and expectations around the transition from a crib to a bed, which often happens around ages 2-4 years.  

Added to this is a conversation about how to deal with struggles with getting your child down for the night. One effective method is changing the *timing* of bedtime, often trying to make it a little earlier, which can result in more sleep for your child. Dr. Canapari also brings attention to the clear and significant sleep disparities that exist across socioeconomic lines in both adults and children. They emphasize the importance of paying attention to the red flags of behavioral issues, falling asleep easily, and hyperactivity which can indicate insufficient sleep. 

Matt and Craig discuss the increasing use of melatonin as a sleep aid in children over the past decade and address safety concerns, highlighting that it can be an appropriate intervention if used with caution and in conjunction with a behavioral plan. Finally, Dr. Canapari reminds us that snoring in a child should not be ignored. It can be a sign of obstructive sleep apnea, which can be holding your child back. 

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way. 

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Another sponsor this week is the biochemical electrolyte drink company LMNT, and they are very kindly offering eight free sample packs when you purchase any one of their orders at drinklmnt.com/mattwalker. LMNT is an electrolyte sports drink that I can get behind - it's created from the basis of science, and it has no sugar, no coloring, and no artificial ingredients – all qualities that are so important to maintaining your blood biochemical balance. If you want to give LMNT a try, just head on over to drinklmnt.com/mattwalker and get your eight free samples with your first purchase. 

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

Links for Dr. Canapari:

Book: https://a.co/d/07SDrVn  

Twitter: https://twitter.com/DrCanapari

Web: sleek.bio/canapari

TikTok: https://vm.tiktok.com/ZMemf3exT/

Instagram: https://www.instagram.com/drcanapari/

FB: https://www.facebook.com/CraigCanapariMd/

Today Matt’s discussion with  Dr. Craig Canapari continues, as they delve into the science behind sleep training. Together they cover what it is and when it may be an appropriate technique. Dr. Craig Canipari provides an overview of the different methods of sleep training - ranging from simple bedtime routines, to extinction  (also known as cry it out) - as well as some of the historical context behind the technique, and also the controversies and alternatives. It is such a personal choice, and different people feel comfortable with different methods. Dr. Canipari also discusses time restricted eating for your infant, and the importance of considering the long-term effects of sleep deprivation on parents.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way. 

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Also sponsoring this week are those fine people at Athletic Greens, and they are generously offering 3 benefits for anyone who uses the above link for their first order: 1) a discount on your order; 2) a one-year free supply of vitamin D; 3) five free travel packs. Athletic Greens is a nutrition drink that combines a full complement of antioxidants, minerals, and biotics, together with essential vitamins. Matt’s been using it for several years now because he’s serious about his health, and because he did his research on the science and ingredients in Athletic Greens and thinks its scientific data can be taken as ground truth.

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

Links for Dr. Canapari:

Book: https://a.co/d/07SDrVn  

Twitter: https://twitter.com/DrCanapari

Web: sleek.bio/canapari

TikTok: https://vm.tiktok.com/ZMemf3exT/

Instagram: https://www.instagram.com/drcanapari/

FB: https://www.facebook.com/CraigCanapariMd/

Today Matt begins a new series all about sleep in infants, in kids, in teenagers, and in parents. He is joined by Dr. Craig Canapari one of the world leaders in pediatric sleep medicine. Dr. Canapari  has also written a fantastic book on sleep for babies, kids and parents called, It's Never Too Late to Sleep Train. Enjoy the first episode in a new series, with some show highlights below! 

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way. 

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

 Today's podcast is also supported by biochemical electrolyte drink company LMNT, and they are very kindly offering eight free sample packs when you purchase any one of their orders at drinklmnt.com/mattwalker. LMNT is an electrolyte sports drink that I can get behind - it's created from the basis of science, and it has no sugar, no coloring, and no artificial ingredients – all qualities that are so important to maintaining your blood biochemical balance. If you want to give LMNT a try, just head on over to drinklmnt.com/mattwalker and get your eight free samples with your first purchase. 

And, as always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

Links for Dr. Canapari:

Book: https://a.co/d/07SDrVn  

Twitter: https://twitter.com/DrCanapari

Web: sleek.bio/canapari

TikTok: https://vm.tiktok.com/ZMemf3exT/

Instagram: https://www.instagram.com/drcanapari/

FB: https://www.facebook.com/CraigCanapariMd/

On today’s episode, Matt goes beyond the if and the what type of exercise to discuss the when. Which is to say, does the timing of exercise matter when it comes to sleep improvements? Based on his experience working on insomnia, Matt would previously have recommended avoiding mid-to-late evening exercise as the resulting rise in core temperature could harm your chances for good sleep. However, it’s since been discovered that the evidence is quite the contrary, mostly allowing us to abandon the myth of evening exercise as the archenemy of good sleep.

But how late is late? How close to bedtime can exercise be done before things actually break? Studies have shown that exercise 3.5 hours before bed boosts sleep by fifteen minutes and significantly reduces the amount of time spent awake at night, while individuals who did weightlifting or resistance training two hours before bed fell asleep in half the time it would normally take and experienced an almost 20% boost in deep non-REM sleep in the first few hours of the night. Getting even closer to bed, an all-men study showed that neither cardio nor weight/resistance training ninety minutes before bed did any damage to sleep (though there was no marked sleep improvement either). But at sixty minutes, there was an impact—a reduction in the total amount and overall efficiency of sleep. Therefore, it seems that exercise before bed will more than likely result in very enviable sleep benefits, so long as it’s done more than an hour before bed (and ideally ninety minutes before).

In addition, it’s been discovered that exercising across different times of day can make a difference to the amount of at least three specific sleep features: REM sleep, light non-REM sleep, and time spent tossing and turning awake at night. First, exercising in the middle part of the day (i.e. three to eight hours before bed) is associated with moderately less REM sleep. Second, morning or evening exercise provides the nice benefit of spending less time in less-restorative, light non-REM sleep. And third, working out in the evening (at least three hours before bedtime) leads to more efficient sleep and less tossing and turning.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Also sponsoring this week are those fine people at Athletic Greens, and they are generously offering 3 benefits for anyone who uses the above link for their first order: 1) a discount on your order; 2) a one-year free supply of vitamin D; 3) five free travel packs. Athletic Greens is a nutrition drink that combines a full complement of antioxidants, minerals, and biotics, together with essential vitamins. Matt’s been using it for several years now because he’s serious about his health, and because he did his research on the science and ingredients in Athletic Greens and thinks its scientific data can be taken as ground truth.

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

Today, Matt focuses on how the type, intensity, and duration of exercise affect its impact on sleep. A study of middle-aged adults split its active group into three subgroups: moderate-intensity aerobic exercise, high-intensity aerobic exercise, and moderate-to-intense weight/resistance training. The groups performing aerobic exercise got more beneficial sleep effects, while surprisingly, the greatest improvement was in the moderate rather than the high-intensity group. These findings replicate those from the National Sleep Survey, indicating a Goldilocks syndrome in finding just the right level of exercise to benefit sleep.

Regarding types of exercise, studies show that cycling produces the most robust improvements in deep non-REM sleep. Meanwhile, more mind-body-based exercises provide equal if not greater benefits in sleep quality than traditional forms of physical activity. 

Another factor to consider is duration of exercise. Some studies have discovered that more minutes of acute exercise in a single bout produce larger benefits in several sleep metrics, including deep non-REM sleep, the speed of falling asleep, and the amount of sleep overall. However, it’s also been found that progressively longer bouts of exercise can be associated with a moderate reduction in the amount of REM sleep, though Matt states that it’s such a modest reduction as not to be concerning.

The final element is the intensity of exercise. Early studies found indications that more intense exercise gave a greater improvement in sleep quality, though the difference in improvement was minimal. Later, more comprehensive studies have reinforced this, indicating that it is not necessary to go to the extremes of physical exertion to get most of the sleep benefits exercise provides.

Currently, the reason why exercise promotes better sleep is unknown, but Matt offers several tenable possibilities, including that exercise promotes the release of immune factors and growth hormone. He also suggests a more “out there” explanation in the form of a chemical called brain-derived neurotrophic factor (BDNF), the release of which is facilitated by exercise, and which is known to increase deep non-REM sleep.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

Today's podcast is supported by InsideTracker, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link.  InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and also offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you. 

Another sponsor this week is the biochemical electrolyte drink company LMNT, and they are very kindly offering eight free sample packs when you purchase any one of their orders at drinklmnt.com/mattwalker. LMNT is an electrolyte sports drink that I can get behind - it's created from the basis of science, and it has no sugar, no coloring, and no artificial ingredients – all qualities that are so important to maintaining your blood biochemical balance. If you want to give LMNT a try, just head on over to drinklmnt.com/mattwalker and get your eight free samples with your first purchase. 

And, as always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

This week, Matt goes deeper into the relationship between sleep and exercise. More specifically, does daytime exercise change the stages and types of sleep? Deep sleep is critical for various functions, so anything that can increase it is desirable. Older adults have an inherently difficult time generating deep non-REM sleep; however, a study showed that the amount can shoot up by 40% following a day with modest exercise. Moreover, it indicated that participants’ cognitive functioning was significantly sharper following that night of exercise-enhanced deep sleep.

Exercise in healthy young adults also stimulates a lush increase in deep non-REM slow brainwave activity, up to 50% in the first part of the night. However, that exercise must be more vigorous to see a consistent, substantive, increase in deep non-REM sleep. 

However, there is a footnote to this good news: most of these studies saw a modest but reliable decrease in the amount of REM sleep the night following exercise. This isn’t a surprise for sleep scientists like Matt, who were already aware of some reciprocity between these two types of sleep, which seem to push and pull at each other’s levels. Why this reduction in REM sleep happens with a dose of acute, one-shot exercise and what the consequences are remains unexplored. Matt’s hypothesis is that it occurs because, in many of these studies, the total amount of time in bed is fixed. He suspects that if individuals were left to sleep as much as they wanted, they would sleep a little longer and thereby get the same amount or even more REM sleep.

Ultimately, the question becomes this: is regular exercise effective for maintaining and improving good sleep, or does its potency gradually wear off ? Thankfully, the answer is that regular, consistent exercise does benefit sleep, and the improvements it provides don’t get fade over time. Indeed, a meta-analysis approach teaches us that regular exercise has four persistent benefits, 1) improving sleep efficiency, 2) an increase in the amount of sleep achieved, 3) an increase in the speed of falling asleep, and 4) improvement in the quality of sleep experienced.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Also sponsoring this week are those fine people at Athletic Greens, and they are generously offering 3 benefits for anyone who uses the above link for their first order: 1) a discount on your order; 2) a one-year free supply of vitamin D; 3) five free travel packs. Athletic Greens is a nutrition drink that combines a full complement of antioxidants, minerals, and biotics, together with essential vitamins. Matt’s been using it for several years now because he’s serious about his health, and because he did his research on the science and ingredients in Athletic Greens and thinks its scientific data can be taken as ground truth.

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

Does exercise have an impact on the quantity and quality of your sleep? The National Sleep Foundation's annual poll found that individuals who exercised frequently (defined as three times or more a week) reported sleeping with a higher quality than those who exercised less than once a week.  Exercise has also been shown to increase the release of endorphins, which can improve mood and promote feelings of relaxation, both of which can contribute to better sleep.

As with most things, moderation is key. Overexertion can have negative effects on sleep, so it's important to find a balance that works for you. It's also important to consider the timing of your exercise as engaging in vigorous activity too close to bedtime may make it difficult to fall asleep. On the other hand, some research suggests that low-intensity exercise performed in the evening can actually improve sleep.

Exercise has been shown to lead to longer sleep duration in both healthy individuals and those with sleep disorders, and it may also lead to improved sleep efficiency. One study found that moderate intensity exercise led to a 65% improvement in sleep efficiency, while another found that high intensity exercise resulted in a 34% improvement.

In addition to these benefits, exercise may also lead to deeper stages of sleep and a decrease in the number of awakenings during the night. A meta-analysis of 13 studies found that exercise was associated with an increase in non-rapid eye movement (NREM) sleep, specifically NREM stage 3 sleep, which is the most restorative stage. 

It's important to note that the relationship between exercise and sleep is not a one-size-fits-all scenario. The intensity, duration, and timing of exercise can all impact its effect on sleep. It's important to pay attention to your own body and its unique needs when it comes to finding the right balance of exercise and sleep. Additionally, the optimal amount and type of exercise for improving sleep may vary depending on a person's fitness level and individual preferences. 

It may be helpful to experiment with different durations and intensities of exercise to see what works best for you and your sleep patterns.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

Today's podcast is supported by biochemical electrolyte drink company LMNT, and they are very kindly offering eight free sample packs when you purchase any one of their orders at drinklmnt.com/mattwalker.LMNT is an electrolyte sports drink that I can get behind - it's created from the basis of science, and it has no sugar, no coloring, and no artificial ingredients – all qualities that are so important to maintaining your blood biochemical balance. If you want to give LMNT a try, just head on over to drinklmnt.com/mattwalker and get your eight free samples with your first purchase. 

Another sponsor this week is the good people at InsideTracker, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link.  InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and also offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

And, as always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

Almost every species will suffer catastrophic impairment in the brain and body due to total or chronic partial long-term sleep loss—save for a small handful of befuddling cases where lack of sleep does not cause devastating impairment. While humans are the only species that deprives itself of sleep for no adaptive benefit, there are rare situations where an animal will limit or go completely without sleep. Starvation pushes aside an organism’s need for sleep to forage more widely, while the need to protect newborns can be prioritized over sleep (as seen in the long journeys of killer whales returning to their pods). 

Even more remarkable is the ability of birds to stay awake for thousands of kilometers during migration. The white-crowned sparrow, for example, can withstand days without sleep during their migratory period with no cognitive impairment; it has basically discovered an internal biological Iron Man suit!

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Also sponsoring this week are those fine people at Athletic Greens, and they are generously offering 3 benefits for anyone who uses the above link for their first order: 1) a discount on your order; 2) a one-year free supply of vitamin D; 3) five free travel packs. Athletic Greens is a nutrition drink that combines a full complement of antioxidants, minerals, and biotics, together with essential vitamins. Matt’s been using it for several years now because he’s serious about his health, and because he did his research on the science and ingredients in Athletic Greens and thinks its scientific data can be taken as ground truth.

So, make your way over to InsideTracker and Athletic Greens to take advantage of these incredible deals. And, as always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

Matt continues his series on the impact of cannabis, THC, and CBD upon sleep this week with an examination into the intricacies of cannabidiol (CBD), which, unlike its psychoactive counterpart THC, does not induce a high but is recognized for its potential therapeutic effects. While studies suggest that CBD may aid in alleviating anxiety, movement disorders, pain, and addiction, in this episode, our host focuses on exploring CBD's potential influence on sleep quality while examining its biochemistry and neurobiology.

Matt explains that CBD modulates the body's endocannabinoid system without directly binding to cannabinoid receptors like CB1 and CB2, which THC targets. Instead, CBD enhances the activity of natural endocannabinoids, extending their effectiveness. This modulation can promote sleep by increasing deep non-REM sleep, as demonstrated in both animal and human studies. Despite these promising results, Matt emphasizes that the effects of CBD on sleep are complex and dose-dependent, with higher doses showing potential benefits. 

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

Are sleep troubles keeping you up at night? Matt used to be a skeptic about meditation, but 7 years ago, he tried it using a fantastic meditation app called ‘Calm’, and it transformed his sleep! Now, he meditates for 10 minutes before bedtime every night! He’s also partnered with Calm who have been generous enough to offer his podcast listeners an exclusive 40% discount on their premium subscription! All you have to do is go to calm.com/mattwalker and take advantage of this incredible deal! Head on over now and improve your sleep today!

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you.

Another exciting sponsor is Levels, the groundbreaking continuous glucose monitor that keeps track of your blood sugar levels day and night. Whether you're curious about your body's response to different foods or seeking to enhance your sleep quality, Levels has the answers. If you’re interested, visit levels.link/Mattwalker now to grab an exclusive podcast offer of two free months of this impactful service, and take charge of your health journey today!

As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

The final installment of this series focuses on what happens inside your brain during deep, non-REM sleep that allows you to fixate new memories. There are at least two mechanisms at work here. One is a process of shifting information from short to long-term memory. Each night when you go into deep non REM sleep, those long range brainwaves of deep sleep are going to be moving packets of information, from that short term, vulnerable, USB stick-like memory reservoir (the hippocampus) to the safer long term storage site (the cortex). When we wake up each morning, we've now cleared out that USB memory stick, and we've refreshed and restored our ability to start learning new memories. This process repeats, filling up the USB stick with new information during the day, and then at night, transferring those memories over to the long term storage site in the cortex.

The second memory mechanism, memory replay, is very different. Back in the 1990s, scientists recording the activity of individual brain cells in the memory centers of rats running around a maze discovered that different brain cells coded different parts of the maze. More remarkable was the discovery that the sleeping brain would replay these new memory sequences during deep, non-REM sleep much faster than standard waking speeds. This meant the memory trace was being replayed many times, and the brain was repeatedly etching it more permanently into the brain.

There is at least one other time during sleep when we see memory replay—REM sleep, the stage when we dream. But here, memories are replayed at much slower speeds, sometimes just half the speed of waking experience. Because of this temporal distortion - where time within the dream is slowed down and expanded - you will feel as though you have been dreaming for far longer than you actually have. The movie Inception, in fact, draws some inspiration from this concept - almost as though the director and the writer of the movie Chris Nolan had a little bit of idea help from a sleep scientist!

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

Today's podcast is supported by biochemical electrolyte drink company LMNT, and they are very kindly offering eight free sample packs when you purchase any one of their orders at drinklmnt.com/mattwalker. LMNT is an electrolyte sports drink that I can get behind - it's created from the basis of science, and it has no sugar, no coloring, and no artificial ingredients – all qualities that are so important to maintaining your blood biochemical balance. If you want to give LMNT a try, just head on over to drinklmnt.com/mattwalker and get your eight free samples with your first purchase. 

Another sponsor today is MasterClass - the online streaming platform where anyone can learn from the world's best about a variety of topics such as cooking, art, science, and, of course, technology. When you sign up, you get access to all of the classes taught by such masters as Martin Scorsese, Venus Williams, and Neil deGrasse Tyson, to name a few of Matt’s favorites. You may even find a masterclass from a familiar sleep scientist! This year, Masterclass is offering a special gift for the holidays - buy one annual Masterclass membership and get another one totally free! So if you're curious and have a thirst for learning, head on over to masterclass.com/mattwalker  now.

And, as always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

Previously, we learned sleep is necessary before learning to prepare the brain to learn effectively. But sleep is also needed after learning to cement new information in your brain. This discovery happened in 1924 when two German researchers pitted sleep and wake against each other to see which would win out in memory-savings benefit. Their findings suggested that time spent awake can be hazardous to new memories while time spent asleep has fixating benefits.

Researchers have also put REM sleep head-to-head with non-REM to see which is more effective at saving memories. When it comes to memory, it is deep non-REM that helps hit the save button on new memories. These results led Matt to conduct experiments where we causally enhance the memory using electrical or auditory brain stimulation methods, and as a result, boosting the next day retention of memories. Indeed, with some of these sleep-stimulating methods, researchers have been able to double the amount of memory-savings benefit from sleep.

The results of these studies have real pragmatic and clinical implications, including in the context of aging and dementia. It’s no secret our learning and memory abilities begin to decline as we get older, but it’s also been discovered that a physiological signature of aging is that your sleep gets worse, especially the amount of deep, non-REM sleep. Recent evidence indicates that these two processes aren’t simply co-occurring but significantly interrelated. 

The potential silver lining of this is that sleep is something we may be able to do something about. Matt and other researchers are exploring the use of direct current brain stimulation to restore some healthy quality of deep sleep in older adults and those with dementia, thereby salvaging aspects of the learning and memory function. And the tentative answer so far is that this could work, although it will take some years before we can even start to entertain real hope in this regard.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

Those fine people at Athletic Greens are one of the sponsors of this week’s episode. and they are generously offering three benefits for anyone who uses the above link for their first order: 1) a discount on your order; 2) a one-year free supply of vitamin D; 3) five free travel packs. Athletic Greens is a nutrition drink that combines a full complement of antioxidants, minerals and biotics, together with essential vitamins. Matt’s been using it for several years now because he’s serious about his health and because he did his research on the science and ingredients in Athletic Greens and thinks its science and scientific data that can be taken as ground truth.

Another sponsor this week is the good people at InsideTracker, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link.  InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and also offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

So, make your way over to Athletic Greens and InsideTracker to take advantage of these incredible deals. And, as always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

It is a fundamental truth that sleep is far more than the absence of wakefulness. It is an incredibly active state, demonstrated by the fact that numerous functions of the brain and body are restored by and depend on sufficient sleep. One of the most impressive and best-understood of these is sleep’s beneficial role in boosting learning and memory abilities. Sleep is necessary both before and after learning and it intelligently associates and interconnects new memories together, offering the ability for creativity and ingenuity.

The first of these benefits starts while we’re awake, as the brain acquires novel information, and different types of memories are imprinted in different parts of it. Fact-based memories depend on an area of the brain called the hippocampus, which is almost like a USB stick. Some years ago, Matt and his team conducted a study on the hippocampus and found a 40% deficit in the ability of the brain to make new memories without sleep. In addition, scientists working with rats have found that depriving the brain of sleep stops the cells within the hippocampus’ memory structure from forming strong connections. Notably, it doesn’t take an entire night of sleep deprivation to produce these types of impediments—selective deprivation of deep, non-REM sleep in humans can produce the same effects.

Research has shown that during the deepest stage of deep, non-REM sleep, powerful brainwaves combine to act like a transfer mechanism. Wanting to know even more about how learning capacity and ability change across a waking day and how sleep modifies or restores that, Matt and his team designed a new study on daytime naps. They found that staying awake throughout the day resulted in a progressive decline in learning capacity, while those who took a ninety-minute nap showed no such decline. In fact, their capacity to memorize facts increased after that nap, showing a 20% learning advantage. This illustrates further that, without sufficient sleep, the brain is like a waterlogged sponge, our memory circuits saturated with memories so that we can no longer absorb new information and make new memories effectively.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

Today’s podcast is supported by MasterClass - the online streaming platform where anyone can learn from the world's best about a variety of topics such as cooking, business, art, entertainment, writing, sports, science, health, and, of course, technology. When you sign up, you get access to all of the classes taught by such masters as Martin Scorsese, Neil deGrasse Tyson, Ron Howard, and Bill Clinton to name just a few of Matt’s favorites. You may even find a masterclass from a familiar sleep scientist! And for this Holiday season, if you give one annual membership you'll get a second one, free! 

Another sponsor of today's podcast is the biochemical electrolyte drink company LMNT, and they are very kindly offering eight free sample packs when you purchase any one of their orders at drinklmnt.com/mattwalker. LMNT is an electrolyte sports drink that I can fully get behind - it's created from the basis of science, and it has no sugar, no coloring, and no artificial ingredients – all qualities that are so important to maintaining your blood biochemical balance.

So, make your way over to LMNT and MasterClass to take advantage of these incredible deals. And, as always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

It’s been said that sleep is the new sex, and rightly so—a good night of sleep is going to do many things for the vibrancy, intimacy, and vitality of your relationship. We know that when couples are not getting sufficient sleep, they have more conflicts the next day and won’t resolve them nearly as well. This is partly because underslept couples suffer a loss of empathy for each other.

However, insufficient sleep also has an effect on sex itself. Specifically, your reproductive hormones suffer, which are critical for the health of your sexual relationship. For example, young men who sleep just four to five hours a night will have a level of testosterone equivalent to someone ten years their senior.

The same is true for women. Women who are not getting adequate sleep are 30% more likely to have abnormal menstrual cycles and suffer reductions in hormones critical to sexual wellness and fertility, including estrogen, luteinizing hormone, and follicle-stimulating hormone. 

Reductions in estrogen and testosterone can also decrease the sexual arousal a woman experiences. In contrast, one hour of extra sleep is associated with a 14% increase in the likelihood of a woman wanting to be sexually intimate with her partner.

So sleep will certainly enhance sex, but it turns out that sex will also enhance your sleep. Sex before bed will improve the subsequent quality of sleep that you get that night, as long as that sex results in orgasm.

And thankfully, it’s not necessary to have a partner to get these benefits. Orgasm achieved through self-stimulation helps an individual fall asleep faster, and improves the reported quality of sleep they subsequently obtain. 

These findings are potentially important because they tell us that both sex and orgasm seem to be reliable sleep aids. So perhaps we don’t need to look to the latest and greatest sleep gadgets. Instead, we may be able to explore sex and orgasm as potential pathways to better sleep. In summary, sleep and sex are powerful and playful bedfellows.

Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive.

The good people at InsideTracker are one of the sponsors of this week's episode, and they are generously offering a special 25% off any one of their programs for anyone who uses the above link during the time window of this episode. InsideTracker is a personalized biometric platform that analyzes your blood and your DNA to better understand what's happening inside of you and offers suggestions regarding things that you can do to better try and adjust some of those numbers, optimize them, and, as a result, optimize you.

Also sponsoring this week are those fine people at Athletic Greens, and they are generously offering 3 benefits for anyone who uses the above link for their first order: 1) a discount on your order; 2) a one-year free supply of vitamin D; 3) five free travel packs. Athletic Greens is a nutrition drink that combines a full complement of antioxidants, minerals, and biotics, together with essential vitamins. Matt’s been using it for several years now because he’s serious about his health, and because he did his research on the science and ingredients in Athletic Greens and thinks its scientific data can be taken as ground truth.

So, make your way over to InsideTracker and Athletic Greens to take advantage of these incredible deals. And, as always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.