Full Show Notes: https://bengreenfieldlife.com/sisson2026 Mark Sisson takes direct aim at VO2 Max as the longevity gold standard, arguing that chasing it cost him 32 pounds of muscle and real-world function. His alternative: a decathlete's "Old Man Olympics" framework at 72, combining strength, speed, balance, and endurance. We also cover cold plunging, alcohol, biohacking, AI, and why foot health may be the single most overlooked longevity lever. Timestamps - Why VO2 Max is overrated and what to focus on instead…04:41 - The "Old Man Olympics" fitness benchmarks at 72…08:30 - Why Mark walked away from cold plunging…15:17 - The alcohol debate and minimum effective dose…20:39 - Anti-biohacking philosophy: sleep, diet, movement first…28:08 - AI, abundance, and doing something hard every day…34:30 - What's new at Peluva…50:10 - Foot health as the lowest-hanging fruit in longevity…54:35 Mark Sisson founded Peluva shoes and authored Born to Walk. He ignited the ancestral health movement with Mark's Daily Apple and The Primal Blueprint, popularized keto and intermittent fasting with The Keto Reset Diet and Two Meals a Day, and sold Primal Kitchen to Kraft Heinz for $200M. Get 10% off Peluva shoes with code BGREENFIELD at https://bengreenfieldlife.com/peluva 🏋️Sign up for a FREE Coaching Call! - https://jointriumphcoaching.com 📲 Check out my FREE Top Health Community! - https://joinlifenetwork.com 💊Shop My Curated Marketplace of Vetted Products! - https://shoplifemarket.com 📩 Check out my FREE newsletter! - https://bengreenfieldlife.com/newsletter/ 🔗My Website: https://bengreenfieldlife.com/ 🔗My Podcast: https://bengreenfieldlife.com/podcast/ 🔗My Books: https://shopbengreenfieldlife.com/collections/books Connect with me: ⬇️ Instagram https://www.instagram.com/bengreenfieldfitness/ Facebook https://www.facebook.com/BGFitness X https://twitter.com/bengreenfield TikTok https://www.tiktok.com/@bengreenfield