Part 223 – Mark Sisson on Metabolic Flexibility, Alcohol, Fiber, and the Real Secrets to Longevity

Mark Sisson, 72 and still shredded, returns to Peak Human for a powerful conversation on what real healthspan looks like — not chasing 180 years with futuristic tech, but thriving into your 90s with energy, strength, and vitality. As the founder of the Primal Blueprint, Mark brings decades of wisdom on metabolic flexibility, minimalist training, and practical ancestral living.   In this episode, Brian and Mark discuss how to optimize metabolism, how to train smarter (not harder), the real deal with fiber, alcohol, hydration, and carbs — and why metabolic flexibility is the key to enjoying life without strict rules, guilt, or orthorexia. Try the oyster pills! https://nosetotail.org/products/pure-oyster     Show Notes: 02:00 The Primal Blueprint and 25 Years of Low Carb Living 04:00 Minimum Effective Dose – Why Mark Hates Overtraining 11:30 Redefining Metabolic Flexibility 14:00 Burning Carbs and Fat – The Joy of Not Being Rigid 18:00 Why Unsustainable Diets Always Fail 20:30 The European Bread Exception – Healing the Gut for Freedom 24:00 Alcohol, Red Wine & the Spectrum of Acceptable Foods 27:30 Fiber is Overrated – Healing IBS with Collagen & Meat 34:00 What Stool Really Is – Busting Fiber Myths 39:00 The Problem with Sugar Diets & Misguided Trends 44:00 You’re Not Dehydrated – The Hydration Hype Exposed 49:00 Do We Really Need Electrolytes All the Time? 52:00 Sunlight: Powerful, But Not Without Risk     REGENERATIVE PRODUCTS: NosetoTail.org Preorder the film here: http://indiegogo.com/projects/food-lies-post    Film site: http://FoodLies.org YouTube: https://www.youtube.com/c/FoodLies   Follow along: http://twitter.com/FoodLiesOrg http://instagram.com/food.lies http://facebook.com/FoodLiesOrg