The Improvement Warrior Podcast is hosted by Jason Yun. A former gym owner, food & exercise guru who has literally seen the light. Influenced since 2018 by the work of Dr. Jack Kruse and jumping into his teachings and becoming a Mitochondriac.
Circadian Biology rules the roost for health. Yun will dig deep into the power of light, water, magnetism, cold thermogenesis, mindset, sleep, food and exercise. And attempt to translate the work of Dr. Jack Kruse into something you can understand and implement into your life.
"Your Light Envionment is more Important than Food Or Exercise."
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Permanent Daylight Saving Time MUST BE STOPPED! Improvement Warrior Podcast Episode #90
Season 1 · Episode 90
Tuesday, July 28, 2026 • Duration 01:04:35
Permanent Daylight Saving Time MUST BE STOPPED! Improvement Warrior Podcast Episode #90
Hey Improvement Warriors, Jason Yun here — welcome back to the Improvement Warrior Podcast, Episode 90.
I’m a former gym owner and food-and-exercise guy who finally saw the light (literally). Since 2018 I’ve been deep in the teachings of Dr. Jack Kruse and circadian biology.
My core message never changes: your light environment is more important than food or exercise.
In this episode we’re tackling something urgent and timely — the push for Permanent Daylight Saving Time. Politicians are once again trying to lock us into dark winter mornings forever. I’ll break down exactly why this is a biological disaster, how it wrecks your mitochondria, sleep, hormones, and energy, and what we must do to stop it.
Grab your blue blockers, get some real sunlight if you can, and let’s go.
Time Stamp and Highlights of the show
0:00 – 4:30 – Cold open & welcome. Jason introduces Episode 90 and the core thesis: Permanent Daylight Saving Time must be stopped.
4:30 – 12:00 – Quick recap of past DST episodes (especially Episode 82 “Daylight Saving Time Sucks”) and why the current political push (Sunshine Protection Act) is different and more dangerous.
12:00 – 22:00 – History of DST, energy-saving myths debunked, and the real biological cost of shifting clocks away from solar time.
22:00 – 34:00 – Deep dive into circadian biology: morning sunlight as the master zeitgeber, SCN, melatonin, cortisol, and why late winter sunrises under permanent DST create chronic misalignment (effectively permanent social jet lag).
34:00 – 42:00 – Health consequences: increased accidents, heart attacks, depression, cancer risk gradients across time zones, school performance, and mitochondrial dysfunction.
42:00 – 52:00 – Outdoor sunlight segment (shirtless, grounded). Live demonstration of proper morning light exposure and why dark mornings destroy the signal.
52:00 – 60:00 – Practical action steps: what individuals can do right now, how to contact legislators, better alternative (permanent Standard Time), and tie-in to full circadian lifestyle.
Show notes / full page (once live):
Previous related episode: Daylight Saving Time Sucks – Episode 82 →
That’s a wrap on Improvement Warrior Podcast Episode 90. Permanent Daylight Saving Time is not progress — it’s a direct attack on your biology.
Morning light is non-negotiable.
If this hit home, share it with everyone you know, leave a 5-star review on Apple or Spotify (it helps the algorithm and gets you free webinar access — just email me the screenshot), and get on the newsletter at improvementwarriorfitness.com/NL.
Your light environment is more important than food or exercise. Keep seeking the real sun, protect your nights, and I’ll see you in the next one.
Stay an Improvement Warrior.
Stay strong, stay positive, be the Improvement Warrior!
T3 + Vitamin A = LDL + Pregnenolone = All Sex Steroid Hormones
Season 1 · Episode 89
Friday, July 17, 2026 • Duration 16:44
T3 + Vitamin A = LDL + Pregnenolone = All Sex Steroid Hormones
The Critical Biochemical Pathway Most People Never Learn About
In this episode of the Improvement Warrior Podcast (Substack, Apple), Jason Yun breaks down a critical biochemical pathway: how T3 (the active form of thyroid hormone) works with Vitamin A to help utilize LDL cholesterol, which then supports the production of pregnenolone — the precursor to all sex steroid hormones (testosterone, estrogen, progesterone, etc.).
Jason explains the interconnected roles of these molecules in energy production, hormone balance, fertility, mood, and overall vitality. He connects this pathway to his core teachings on circadian biology, mitochondrial health, and the importance of proper light exposure.
The discussion highlights why disruptions in this chain are common in modern life and offers practical insights into supporting it naturally through lifestyle, nutrition, and environment.
Whether you’re dealing with low energy, hormonal imbalances, or simply want to understand how your body produces and regulates sex steroids at the deepest level, this episode delivers clear, actionable knowledge rooted in real biology rather than conventional approaches.
Timestamp Log
0:00 – Intro & welcome to Episode 89
1:10 – Overview of the key pathway: T3 + Vitamin A
3:45 – Role of LDL Cholesterol in the process
6:20 – Pregnenolone as the mother hormone
9:00 – How this leads to all sex steroid hormones
11:30 – Practical implications for energy, hormones & vitality
13:45 – Ties to circadian biology, light exposure, and mitochondria
15:30 – Key takeaways and action steps
No Sunscreen Ever? Dermatology vs. Circadian Biology – Why One Expert Says Ditch SPF for Good: Sunscreen Part 2 Unknown Death Causers Part 8 | Improvement Warrior Podcast Episode 88
Season 1 · Episode 88
Saturday, June 27, 2026 • Duration 02:15:14
No Sunscreen Ever? Dermatology vs. Circadian Biology – Why One Expert Says Ditch SPF for Good: Sunscreen Part 2 Unknown Death Causers Part 8 | Improvement Warrior Podcast Episode 88
Should you never wear sunscreen again?In this episode, we explore Jason Yun’s powerful Substack argument — 'No Sunscreen Ever? Dermatology vs. Circadian Biology.'
While mainstream dermatology insists on daily SPF to prevent cancer and aging, circadian health experts like Jason make a compelling case that sunscreen blocks vital sunlight signals our bodies need for vitamin D, melanin production, hormone balance, and mitochondrial health.
Show highlights
The Core Clash: Mainstream dermatology pushes daily sunscreen to prevent skin cancer and photoaging, while circadian biology views sunlight as essential medicine that sunscreen actively blocks.
Vitamin D Sabotage: Even SPF 8 blocks 92–95% of vitamin D production; higher SPFs (30/50/75) are even more restrictive — turning one of the sun’s biggest health benefits into a non-event.
Chemicals in Your Bloodstream: Sunscreen ingredients are absorbed through the skin (the body’s largest organ).
Circadian Disruption on the Skin: Sunscreen blocks critical light signals to opsins and chromophores in the skin, interfering with POMC processing, hormone signaling (dopamine, alpha-MSH), and the skin’s own circadian clocks
The “Solar Callus” Concept: Gradual, properly sequenced sun exposure (sunrise first, then UVA/UVB) allows the body to build natural melanin armor
Melanin Is Your Superpower: Far more than cosmetic tanning — melanin acts as a potent antioxidant, mitochondrial protector, and biological sunscreen that modern indoor lifestyles + seed-oil-heavy diets have made us lose.
Spring Break Florida Recap & Random Thoughts | Improvement Warrior Podcast Episode 87
Season 1 · Episode 87
Friday, April 24, 2026 • Duration 01:12:14
Spring Break Florida Recap & Random Thoughts | Improvement Warrior Podcast Episode 87This podcast goes over my spring break trip from late March to Early April 2026 down in Florida. 4.5 beach days and 2 Disney days, and a tripto Iowa to pick a new fury friend ;)I cover my routine while down there, sunglasses, current events, the moon landing, a new thing I've been doing for my fascia, and just wherever my mind was at the time. First podcast recorded completely on my phone so any audio issues I apologize in advance. Don't forget to subscribe and leave a review for the podcast. Thank you in advance. Any new reviews on appel or spotify get access to 1 of my premium webinars. Just email me improvementwarrior@mail.com with a screenshot and the webinar of choice. Resources:-Fascia Sticks: http://www.improvementwarriorfitness.com/fasciasticksUse code SUNYUNJASON-Improvement Warrior Newsletter: http://www.improvementwarriorfitness.com/nl-Improvement Warrior Substack: http://improvementwarrior.substack.com-Patreon Support: http://www.improvementwarriorfitness.com/patreon-Improvement Warrior University Premium: http://www.improvementwarriorfitness.com/iwu-Magnesium Breakthrough: http://www.improvementwarriorfitness.com/magnesium
-Discovery Call Coaching Call with Yun: http://www.improvementwarriorfitness.com/discoverycall
Energy = Clocks & Magnetism Over Calories | Improvement Warrior POdcast Episode 86
Season 1 · Episode 86
Friday, March 20, 2026 • Duration 01:36:04
Energy = Clocks & Magnetism Over Calories | Improvement Warrior POdcast Episode 86
Welcome to a transformative episode where we delve into the profound effects of circadian rhythms on our overall health and well-being. Are you tired of the endless cycle of fad diets and workout plans? Discover the secrets of your body’s natural clock and unlock a holistic path to real energy.
We'll explore how Einstein's infamous equation, E= MC2 relates to you and your energy levels and your daily routines. Join us for an enlightening journey towards syncing with nature's timepiece!
Highlights from the show
Understanding magnetism's role is vital for optimizing circadian rhythms and overall health.
Energy production and life clocks link directly through the body's magnetic fields.
How Einstein's equation fits into your life and the life of those who are subservient to coffee and red bull
The body's internal rhythm adapts to the Earth's geomagnetic fields.
Exposure to natural light synchronizes your body's circadian environment.
Blue light and EMF disrupt circadian alignments and affect mitochondrial performance.
Cold exposure can upregulate mitochondrial biogenesis and efficiency.
Geomagnetic forces influence water structure, impacting cellular energy functions.
Lifestyle shifts integrating natural cycles boost energy alignment with Earth's magnetism.
Mitochondrial health is tied to metabolic flexibility in different magnetic environments.
EMF-conscious living entails rethinking device usage for better mitochondrial health.
Improvement Warrior University Premium: http://www.improvementwarriorfitness.com/iwu
Why carbs are bad in winter | Improvement Warrior Podcast Episode 85
Season 1 · Episode 85
Wednesday, February 11, 2026 • Duration 56:51
Why carbs are bad in winter | Improvement Warrior Podcast Episode 85
Welcome to today's episode, where we unravel the complex relationship between carbohydrates and your health during the chilly winter months.
Are you among those who fill up on carbs when the temperature drops, thinking they'll keep you warm and energized?
Tune in as we explore how this common winter habit might be doing more harm than good. Discover the science behind your body's natural cycles and learn how to align your diet for peak health and energy during winter. Whether you're looking to enhance your nutritional practices or simply understand the rhythms of seasonal eating, this episode is packed with insights you won't want to miss.
Highlights of the show:
Carbs vs. Fats and Proteins: Explore alternatives to carb-heavy meals to sustain your energy.
Photosynthesis, Plants, and Your Diet: Understand how shorter days affect the nutrition of plant foods.
Seasonal Eating and Its Benefits: Learn why timing your meals with the seasons can improve your health.
Circadian Rhythm Explained: Dive into how meal timing affects your body’s internal clock and energy levels.
Common Winter Nutrition Mistakes: Identify and avoid common dietary pitfalls during the colder months.
What are Deuterium and DHA? Simplify these concepts and their significance to your health.
Surprising Benefits of Cold Exposure: Discover how cold exposure can boost your metabolism.
Practical Tips for Seasonal Eating: Gain actionable advice to incorporate seasonal foods into your diet.
Show notes and resources http://www.improvementwarriorfitness.com/carbsbad and http://www.improvementwarriorfitness.com/wintercarbs
10 Quick Health Tips for 2026 | Improvement Warrior Podcast Episode #84
Season 1 · Episode 84
Thursday, January 8, 2026 • Duration 28:12
10 Quick Health Tips for 2026 | Improvement Warrior Podcast Episode #84
Beyond the Basics: Surprising Tips for Holistic Health
Welcome to the latest episode of our podcast, and sorry for the long hiatis between shows. Today we dive deep into the often overlooked factors that can make or break your health journey. Have you ever felt like you're doing everything right but still not achieving optimal wellness? You're not alone. Today, we explore 10 quick health tips that reveal hidden disruptors like blue light, EMF exposure, plastic in everything and dehydration.
Episode Highlights-
1. Exercise is a hormetic Stress2. Dieting is stupid3. Workout under blue light is stupid4. Fake Clothes5. Fake toothbrushes6. Physical Pain must be dealth with NOW7. DHA is most important food to eat8. Never get a flu shot9. Nervous system regulation is more important than working out10. Be punctual Resources Mentioned: The Agenda: Their Vision, Your Future: https://www.youtube.com/watch?v=ZFHHOBiUrkg Go Dark Faraday Pouches: http://www.improvementwarriorfitness.com/godark Private Facebook Group IWU: http://www.improvementwarriorfitness.com/iwufb Improvement Warrior Newsletter: http://www.improvementwarriorfitness.com/nl Support the Podcast on Patreon: http://www.improvementwarriorfitness.com/patreon
Subscribe, rate, and review the Improvement Warrior podcast on Apple or Spotify. If you find value in our discussions, consider supporting us through Patreon. Feel free to reach out with any questions or for further discussion on my social media platforms or via email at improvementwarrior@mail.com. Let's keep the conversation going!
My personal failings with the time change + Documentary on Digital ID and more | Improvement Warrior Podcast Epsidoe 83
Season 1 · Episode 83
Saturday, November 22, 2025 • Duration 29:01
My personal failings with the time change + Documentary on Digital ID and more | Improvement Warrior Podcast Epsidoe 83
Welcome to episode 83 of the Improvement Warrior podcast! I'm your host, Jason Yun, here to empower you as a health advocate in a world full of changing health paradigms. In today's episode, I wanted to talk about my failures with the time change in terms of my eating and how I fixed it, updates on my removing myself from the organ donation registry, a documentary everyone needs to watch releated to Real and digital ID, some super health Black Friday deals happening now and more. Stick around to uncover insights that will help you stay informed and improve your health.
Show highlights
The impact of daylight savings on circadian rhythms, featuring my personal fails from the week after the time change.
Understanding meal timing and its critical role in maintaining metabolic health.
Coping with seasonal affective disorder and the importance of sunlight exposure.
Concerns about corruption in the organ donation system and navigating mainstream medical services.
Exploring Black Friday deals on health improvement products, including EMR Tek and blue blockers.
Insights from "The Agenda: Their Vision, Your Future" documentary and tips on maintaining digital privacy by rejecting Real and Digital IDs.
Introducing Brighteon AI as an alternative for unbiased health information.
Daylight Saving Time Sucks |Improvement Warrior Podcast Episode 82
Season 1 · Episode 82
Wednesday, October 22, 2025 • Duration 01:11:31
Daylight Saving Time Sucks | Improvement Warrior Podcast Episode 82
Daylight Saving Time Sucks |Improvement Warrior Podcast Episode 82 Introduction
In this fascinating episode, we dive into a timely topic that affects millions but is rarely dissected: daylight saving time. More than an inconvenience, this biannual time shift can have serious repercussions on your health. We'll explore how it disrupts your circadian rhythm, why the old energy-saving myths don’t hold up, and what steps you can take to mitigate its effects. Whether you're an advocate for change or just tired of losing sleep, this episode has insights that could redefine how you approach your day—and your health. Tune in for expert advice and practical tips to reclaim your sleep and well-being.
Show Highlights
[00:02:35] Introduction to Circadian Rhythms Unpack why DST affects your body's natural timekeeping.
[00:05:10] Sleep Deprivation and Mental Health Discover how losing just one hour can impact stress and anxiety.
[00:09:45] The Energy Savings Myth Debunked Learn why DST may not be saving energy, as many believe.
[00:14:20] Blue Light Management Strategies Practical steps to reduce screen impact on sleep quality.
[00:19:00] Healthy Lifestyle Practices Tips on exercise and meditation to boost sleep quality.
[00:23:50] Natural Light and Grounding Techniques Explore how morning sunlight and grounding can benefit your health.
[00:28:30] Dietary Habits Affecting Sleep Foods to eat—and avoid—to improve your sleep.
[00:33:15] Listener Questions and Answers Real-world solutions to DST-related sleep issues.
Penis Enlargement Explored With Dr. Joel Pash | Improvement Warrior Podcast Episode 81
Season 1 · Episode 81
Tuesday, October 7, 2025 • Duration 45:09
Penis Enlargement Explored With Dr. Joel Pash | Improvement Warrior Podcast Episode 81
Welcome to "Penis Enlargement Explored With Dr. Joel Pash" where we shatter misconceptions and uncover the facts about a topic steeped in mystery. In this episode, we navigate the evolving landscape of penile enhancement, exploring motivations from confidence boosts to aesthetic desires. Discover the procedures, from the surgical to the subtle, along with the safety measures that ensure peace of mind. Whether you're curious about the details or considering a procedure yourself, this comprehensive guide offers valuable insights into a subject that captures the interest of many. Join me, Jason Yun, and Dr. Joel Pash of The Upsize Clinic in San Francisco as we embark on this enlightening journey.
Show Highlights
Understanding the Demand
The diverse motivations behind seeking penile enlargement, including confidence and aesthetic desires.
Exploring Procedure Options
A breakdown of surgical vs. non-surgical enlargement methods and their respective advantages.
Injectable Fillers Explained
Details on the use of hyaluronic acid-based fillers and their reversibility.
Risks and Safety Measures
Common risks of enlargement procedures and how safety measures can minimize them.
Who Seeks Penile Enlargement
A diverse demographic, from professionals to athletes, exploring these procedures.
Common Myths Debunked
Dispelling myths about motivations and outcomes to foster informed decisions.
The Psychological Impact
Exploring how penile enlargement can affect mental health and relationships.
Host’s 8+-Year Experiment: Jason Yun stopped using sunscreen after his 2011 honeymoon, built a base tan through consistent exposure
Photoaging Reconsidered: Wrinkles and elastosis aren’t solely caused by UV — proper sun exposure (in the right sequence) can actually support collagen, elastin, and hyaluronic acid production.
Why We’re More Sun-Sensitive Today: Modern factors (chronic indoor living, blue light/EMF overload, high omega-6 diets, magnesium deficiency) make skin burn easier. The solution isn’t more sunscreen — it’s fixing the underlying environment.
Sunscreen & Melanoma Paradox: The article highlights research suggesting sunscreen users can have higher melanoma risk, possibly due to longer intentional sun exposure combined with blocked benefits and toxic ingredients.
Dermatology Critique: Dermatologists are trained in a system called “Rockefeller medicine” — focused on treating symptoms and creating lifelong patients rather than optimizing the skin as a light-sensing, hormone-producing organ.
Broader Systemic Wins from Sunlight: Beyond skin, proper exposure boosts nitric oxide, supports sulfated vitamin D, enhances immunity (cathelicidin), improves mitochondrial function, lengthens telomeres, and strengthens circadian alignment for better sleep, mood, and metabolism.
Sunscreen absorption study: "Effect of Sunscreen Application Under Maximal Use Conditions on Plasma Concentration of Sunscreen Active Ingredients" (JAMA randomized clinical trial).
Subscribe, rate, and review the Improvement Warrior podcast on Apple or Spotify. If you find value in our discussions, consider supporting us through Patreon. Feel free to reach out with any questions or for further discussion on my social media platforms or via email at improvementwarrior@mail.com. Let's keep the conversation going!
