The Dr. Gabrielle Lyon Show

• Understanding Heart Rate Variability: Improving Your Health & Performance | Joel Jamieson

  When it comes to performance, more isn’t always better. In this episode, I sit down with conditioning expert Joel Jamieson to explore the science of recovery, aerobic fitness, and how to use heart rate variability (HRV) to train smarter. They dive into why elite athletes recover so quickly, the long-term value of zone 2 training, and how HRV reflects your resilience—not just your readiness. Joel shares lessons from two decades of working with fighters, Olympians, and NFL players, along with powerful insights from his own cardiovascular health journey. Whether you’re a high performer or simply want to live longer and stronger, this episode is packed with practical takeaways.In this episode, you’ll learn:What HRV actually tells you—and what it doesn’tWhy aerobic fitness is one of the strongest drivers of recovery and longevityThe surprising downside of too much strength trainingHow to monitor training load and avoid overtrainingWhy lifestyle stress matters more than your workoutThis episode will change the way you think about training—and reveal why recovery deserves a central role in your performance strategy.Who is Joel Jamieson? Joel Jamieson is a leading coach and educator in recovery-based training and heart rate variability (HRV). With over 20 years of experience working with professional athletes, including NFL players and world champion fighters, he’s known for translating complex performance science into practical tools. He’s the creator of Morpheus, a system that helps tailor training to daily recovery status, and the founder of 8WeeksOut, a resource for conditioning and performance education.This episode is brought to you by:Puori - Code DRYLYON to get 20% off sitewide - https://Puori.com/DRLYONMUD\WTR - Code DRLYON to get up to 43% off your starter kit - https://mudwtr.com/DRLYONBON CHARGE - Code DRLYON to get 15% off your entire order - https://boncharge.com/DRLYONARMRA - Code DRLYON to get 15% off your first order - https://tryarmra.com/DRLYON Find Joel Jamieson at:Instagram: @coachjoeljamieson8WeeksOut: https://8weeksout.com/Morpheus: https://trainwithmorpheus.com/Find Me At: Instagram:@drgabriellelyon TikTok: @drgabriellelyonFacebook: facebook.com/doctorgabriellelyonYouTube: youtube.com/@DrGabrielleLyonX (Twitter): x.com/drgabriellelyonApply to become a patient – https://drgabriellelyon.com/new-patient-inquiry/Join my weekly newsletter –

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• Why Do Most Diets Fail? The Science of Nutrient Deficiencies | Ty Beal PhD

  In this episode, I’m joined by Dr. Ty Beal—global nutrition researcher and Senior Technical Specialist at the Global Alliance for Improved Nutrition (GAIN)—to uncover the hidden epidemic of micronutrient deficiencies worldwide. From food access and affordability to ultra-processed diets and nutrient bioavailability, we explore how modern food systems are failing billions and what needs to change to truly make the world healthier.We cover:Why 3 billion people can’t afford a healthy diet—and how that affects nutrient statusThe most common global and U.S. micronutrient deficiencies (and why they’re often overlooked)Why women and children are especially vulnerable during pregnancy, infancy, and adolescenceThe role of ultra-processed foods in displacing nutrient-rich optionsHow bioavailability, anti-nutrients, and the “food matrix” impact your real nutrient intakeWhy plant-based diets aren’t always safer—and the hidden risks of nutrient shortfallsThe science behind biofortification, food system reform, and why animal-source foods stil matterWhat the U.S. gets wrong about food guidelines, global trade, and nutritional equityWhether you care about maternal health, child development, or just making better nutrition decisions, this is a vital conversation about nutrient density, food justice, and global health.Who is Dr. Ty Beal?Dr. Ty Beal is a Senior Technical Specialist and global nutrition scientist at the Global Alliance for Improved Nutrition (GAIN) where he leads research on global food systems, nutrient inadequacy, and diet quality. His work bridges science and policy to help address the world’s most pressing nutrition challenges—especially among vulnerable populations. He’s published extensively on micronutrient gaps, ultra-processed foods, and global dietary patterns, and is one of the most cited voices on nutrition equity in developing nations.This episode is brought to you by:LMNT – Code DRLYON for a free LMNT Sample Pack! → https://drinklmnt.com/drlyonTimeline – Get 10% OFF Mitopure with code DRLYON → https://timelinenutrition.com/LYONNed – Get 15% off with code DRLYON → https://helloned.comOur Place – Get 10% off sitewide with code DRLYON → https://fromourplace.com/DRLYONFind Dr. Ty Beal at:GAIN Health - https://www.gainhealth.org/ty-beal Google Scholar - https://scholar.google.com/citations?user=3y5uHRIAAAAJ&hl=en X (Twitter) - https://x.com/TyRBeal LinkedIn - https://www.linkedin.com/in/tybeal/Find Me at: Instagram:@drgabriellelyon TikTok: @drgabriellelyonFacebook: facebook.com/doctorgabriellelyonYouTube:

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• Women’s Training & The Menstrual Cycle: What the Science Actually Says | Lauren Colenso-Semple, PhD

  In today's episode, I had the chance to speak to muscle physiology researcher and science communicator Dr. Lauren Colenso-Semple. Together, we unpack the common claims around hormones and training—from whether you should change your workouts based on your cycle, to the real effects of fasted cardio and birth control on performance and muscle growth. We also explore how menopause affects body composition, what the science actually supports when it comes to training differences between men and women, and why some of the most persistent myths about women’s physiology are based more on assumption than evidence.What You’ll Learn:Why women’s physiology is not a limitation for building muscleWhether training around your menstrual cycle or avoiding fasted workouts is necessaryThe truth about oral contraceptives and their impact on performance, hypertrophy, and strengthHow menopause affects body composition—and what you can do about itWhy consistency and progressive overload matter more than hormone fluctuationsHow much protein and resistance training women actually need—and when to eat itThis conversation is for every woman who’s been told her physiology is too complicated to train effectively. It’s not. The science is finally catching up—and Lauren is helping lead the charge.This episode is brought to you by: Puori – Get 20% off with code DRLYON - https://puori.com/DRLYONCozy Earth – Use code DRLYON for up to 40% off - https://cozyearth.comBONCHARGE – Get 15% off with code DRLYON - https://boncharge.com/DRLYONOneSkin – Get 15% off with code DRLYON - https://oneskin.comFind Dr. Colenso-Semple at: Instagram - @drlaurencs1LinkedIn - https://www.linkedin.com/in/laurencolensosemple/ X/Twitter - @drlaurencs1Find me at: Instagram:@drgabriellelyon TikTok: @drgabriellelyonFacebook: facebook.com/doctorgabriellelyonYouTube: youtube.com/@DrGabrielleLyonX (Twitter): x.com/drgabriellelyonApply to become a patient – https://drgabriellelyon.com/new-patient-inquiry/Join my weekly newsletter – https://institute-for-muscle-centric-medicine.ck.pageGet my book – https://drgabriellelyon.com/forever-strong/Timestamps: 00:00 – Introduction to the episode and what it covers: hormones, menstrual cycles, birth control, and muscle growth.01:00:29 – Training volume and progressive overload: what actually matters for hypertrophy.01:02:51 – Fasted training and cortisol: where the

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• The Truth About Women’s Metabolism, Muscle & Fat Loss at Every Age | Abbie Smith-Ryan, PhD

  In this episode, I’m joined by Dr. Abbie Smith-Ryan—one of the leading researchers in exercise physiology and women’s metabolism—to unpack the science of how women should be training through perimenopause, postmenopause, and beyond. We dive into the physiological changes that impact body composition, performance, and recovery—and how to adjust training and nutrition to match.We discuss:How high-intensity interval training (HIIT) improves VO₂ max, fat oxidation, and muscle quality in womenWhether fasted training helps or hurts, and why so many women are under-fueledWhat the science really says about lifting heavy and building muscle over 40Nutrient timing, rest intervals, and why sex-based differences in physiology matterWhat we still don’t know about hormone therapy, protein needs, and female-specific adaptationsIf you’re navigating training, muscle loss, or metabolic changes through midlife, this conversation will give you clarity, confidence, and evidence-based strategies you can actually use.Who is Dr. Abbie Smith-Ryan? Dr. Abbie Smith-Ryan is a leading expert in exercise physiology and sports nutrition, currently serving as Associate Chair for Research and Director of the Applied Physiology Lab at the University of North Carolina at Chapel Hill. Her research focuses on evidence-based exercise and nutrition strategies to improve body composition, cardiovascular health, and metabolic function—particularly in women, perimenopausal and postmenopausal populations, and those with obesity. She has authored over 200 peer-reviewed publications and led numerous NIH- and industry-funded clinical trials. Recognized as a top scientist in her field, Dr. Smith-Ryan is also a dedicated educator and mentor, passionate about translating science into actionable strategies that enhance health and performance.This episode is brought to you by: LMNT - Code DRLYON for a free LMNT Sample Pack! – https://drinklmnt.com/drlyonTimeline - For 10% OFF your order of Mitopure – https://timelinenutrition.com/LYONNeeded - Code DRLYON for 20% off your first order - https://thisisneeded.com Divi - Code DRLYON for 20% off your first order https://diviofficial.com/DRLYON Find Dr. Abbie Smith-Ryan at: Website - https://asmithryan.com/ Instagram - https://www.instagram.com/asmithryan/LinkedIn - https://www.linkedin.com/in/abbiesmithphd/Find me at:Instagram:@drgabriellelyon TikTok: @drgabriellelyonFacebook: facebook.com/doctorgabriellelyonYouTube: youtube.com/@DrGabrielleLyonX (Twitter): x.com/drgabriellelyonApply to become a patient – https://drgabriellelyon.com/new-patient-inquiry/Join my weekly newsletter –

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  1:24:45
• The Truth About Sweeteners, Seed Oils, and Building Real Strength | Nick Barringer, PhD

  This week in the studio, I'm joined by Dr. Nick Barringer—Army Ranger, performance nutrition expert, and one of the sharpest minds in military and metabolic health. Together, we cut through the noise around today's most controversial nutrition topics. If you’ve ever felt whiplash trying to make sense of conflicting headlines, this episode is your science-based compass.What’s really going on with artificial sweeteners like sucralose and aspartame? Are seed oils toxic—or just misunderstood? And what’s the actual science behind popular supplements like creatine, testosterone boosters and fat burners?Dr. Barringer brings two decades of elite military and research experience to help us separate hype from evidence—while sharing real-world tools that help people perform, think, and feel better.We cover:Whether sucralose and other artificial sweeteners damage DNA or gut healthWhat to actually worry about with food dyes Seed oils, inflammation, and what most people get wrong about themProtein and carb dosing for people over 40 (and how to think about fiber and fat)Why creatine is still the most underrated supplement for muscle and brain functionTactical hydration tips (and how sweat composition varies with diet)Hidden risks in testosterone boosters and “fat burners”Practical takeaways for elite performance, healthy aging, and being stronger at any ageWho is Dr. Nick Barringer?Nick Barringer, PhD, is a Nutritional Physiologist with deep experience in both applied and academic settings. He directed the U.S. Military-Baylor Graduate Program in Nutrition, taught at West Point, and was the first active-duty dietitian to graduate U.S. Army Ranger School and serve with the 75th Ranger Regiment. He holds a PhD in kinesiology from Texas A&M, and his research on tactical nutrition has been featured in outlets like Science Daily and Men’s Journal.This episode is brought to you by: ARMRA - Use code DRLYON for 15% off your first order → tryarmra.com/DRLYON Manukora - Use code DRLYON for $25 off the Starter Kit → manukora.com/DRLYONOneSkin – Get 15% off with code DRLYON → OneSkin.coNed - 15% off with code DRLYON → helloned.com Find Nick Barringer at: LinkedIn - https://www.linkedin.com/in/nick-barringer-phd-rdn-cscs-cssd-5137789a/Instagram - https://www.instagram.com/nickbarringer.phd.rdn/Facebook - https://www.facebook.com/nickbarringer.phd.rdn/Find me at:Instagram: @drgabriellelyonTikTok: @drgabriellelyonFacebook: facebook.com/doctorgabriellelyonYouTube:youtube.com/@DrGabrielleLyonX (Twitter): x.com/drgabriellelyonApply to become a patient – https://drgabriellelyon.com/new-patient-inquiry/Join my weekly newsletter –

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