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👉 https://proofpractice.substack.com/Dr. Gabrielle Lyon, Dr. Abbie Smith-Ryan, Gabby Reece, and Amber Taylor to make the case that muscle is the most powerful lever women have for metabolic health and longevity. They cover the coming sarcopenia epidemic, why intramuscular fat may matter more than body fat percentage, how to train and eat for real muscle gain, and why most women are under-muscled without knowing it.
WHAT WE EXPLORE
* Muscle as the medical anchor: heart disease, PCOS, fertility, and sexual function
* The sarcopenia epidemic and the role of GLP-1s, sedentary behavior, and low-protein diets
* Muscle quality vs. muscle mass: why intramuscular fat may matter than body fat percentage
* “Skinny fat” risk: why lean women can still have critically low muscle
* Compound movement basics: frequency, load, and whole-body training structure
* Protein targets: the 100g minimum, 1.6g/kg baseline, and meal timing
* Why the 30/30/30 protein model may be leaving women under-fueled
* Blood flow restriction: building muscle and staying active through injury
* New perimenopause research: meaningful muscle gain in just 6 weeks
* Strength training for cognition, mood, and resilience in midlife
Timestamps
* 00:00 Why Women Have Been Lied to About Muscle
* 02:58 Muscle Is the Medical Anchor for Every Chronic Disease
* 05:17 Why We Need a Strength Culture for Women
* 06:41 The Next Epidemic: GLP-1s and the Sarcopenia Crisis
* 07:17 Strength vs. Mass vs. Function: What Actually Matters
* 11:07 Intramuscular Fat: The Health Marker Your DEXA Scan Misses
* 18:10 How to Track Muscle Changes Without a Lab
* 19:33 Why Skinny and Lean Does Not Mean Healthy
* 25:48 Compound Movements, Frequency, and Load: Where to Start
* 29:19 The 1.6g/kg Protein Baseline and Why Timing Matters
* 33:53 Blood Flow Restriction: Build Muscle and Train Through Injury
* 36:15 Why 100g of Protein Is the Daily Floor for Women
* 39:11 Why the 30/30/30 Protein Model Is Leaving You Under-Fueled
* 41:19 Eat Protein Before Stressful Events to Flatten Cortisol Spikes
* 47:53 Perimenopausal Women Built Muscle in Just 6 Weeks
* 50:40 Strength Makes You Smarter, Calmer, and More Resilient
* 55:30 What to Actually Do Starting This Week
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ABOUT THE PROOF OF PRACTICE
The Proof of Practice: Where Science Meets Practice
Women have been understudied, undertreated, and given advice built for men. This show exists to change that.
Hosted by five of the most respected names in women’s health — Dr. Abbie Smith-Ryan, Amber Taylor, Gabby Reece, Dr. Gabrielle Lyon, and Dr. Stacy Sims — every episode brings evidence-based, experience-backed conversations on strength, metabolism, hormones, longevity, and performance. No trends. No shortcuts. Just the proof that practice works.
YOUR HOSTS
Gabby Reece
One of the most iconic athletes in American sports history, Gabby Reece is a former professional beach volleyball player, Nike’s first female spokesperson, New York Times bestselling author, and lifelong advocate for how women should train, eat, and live. She co-founded the Hamilton House Experience wellness program with her husband Laird Hamilton and hosts The Reecet women’s wellness retreat. Gabby brings decades of real-world performance experience to every conversation.
📷 Instagram: https://www.instagram.com/gabbyreece/
🌐 http://gabbyreece.com
Dr. Abbie Smith-Ryan, PhD, CSCS*D, FACSM, FNSCA
Professor of Exercise Physiology at the University of North Carolina Chapel Hill and Director of the Applied Physiology Laboratory, Dr. Abbie Smith-Ryan has published over 190 peer-reviewed manuscripts and is one of the leading researchers in female physiology, metabolism, and sports nutrition. A three-time NSCA award winner — including Outstanding Sports Scientist of the Year (2022) — she translates cutting-edge lab science into practical strategies that actually work for women across every life stage.
📷 Instagram: https://www.instagram.com/asmithryan/
🌐 http://asmithryan.com
Amber Taylor
Amber Taylor is a New Zealand–based digital health and product leader who builds evidence‑based fitness platforms designed to better support women’s physiology, safety, and long‑term wellbeing. Drawing on two decades in technology and digital roles at Amazon, Nike, and Les Mills, she uses AI, behavioral insights, and omnichannel delivery to create inclusive training experiences that help women move consistently, recover smarter, and integrate exercise into real life.
Dr. Gabrielle Lyon, DO
Board-certified in family medicine and fellowship-trained in nutritional science and geriatrics, Dr. Gabrielle Lyon is the founder of muscle-centric medicine — a framework that positions skeletal muscle as the cornerstone of metabolic health, longevity, and disease prevention. She is the author of the bestselling book Forever Strong and one of the most sought-after voices in functional medicine and women’s performance.
📷 Instagram: https://www.instagram.com/drgabriellelyon/
🌐 http://drgabriellelyon.com
Dr. Stacy Sims, PhD
Exercise physiologist and nutrition scientist Dr. Stacy Sims has spent her career closing the research gap on women in sport — making the case that women are not small men and should not be trained or fueled as such. She is the author of ROAR and Next Level, a two-time TEDx speaker, and the go-to expert on how hormones, training, and nutrition interact across the female lifespan, from athletic peak to perimenopause and beyond.
📷 Instagram: https://www.instagram.com/drstacysims/
🌐 http://drstacysims.com
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