You might not expect to learn about fasting, fat loss, family rituals, and biohacking when chatting with Lucifer himself—yet that’s what happened when I sat down at HUME with actor and comedian Luke Cook (Chilling Adventures of Sabrina, Guardians of the Galaxy Vol. 2). Luke’s hilarious (and a great follow on IG): but he’s also a husband, dad, and someone genuinely curious about health, vitality, and community. In this conversation, we dug into: - Cycling through vegan, vegetarian, keto—and why I’ve landed on a ketogenic rhythm that actually works - Cold plunging myths, timing, and the science every man and woman should know - Peptides, nootropics, and the fat-loss “triple stack” that still surprises people - The 7 am/7 pm bookends I use to guard family rituals and presence at home … plus Luke’s perspective on conflict, fatherhood, and the realities of pursuing vitality in Hollywood. Full show notes: bengreenfieldlife.com/firesidechatLA Ben Greenfield Life Website: https://bengreenfieldlife.com/ Ben Greenfield Life Podcast: https://bengreenfieldlife.com/podcast/ Ben Greenfield Books: https://shopbengreenfieldlife.com/collections/books Instagram https://www.instagram.com/bengreenfieldfitness/ Facebook https://www.facebook.com/BGFitness X https://twitter.com/bengreenfield TikTok https://www.tiktok.com/@bengreenfield 00:00 Intro 04:17 Cyclic Keto Diet Explained 07:36 "Ketones: Travel and Workout Aid" 12:06 "Fasted Workouts: Myths and Facts" 14:42 "Coffee, Butter, and Burning Fat" 19:25 Cold Plunging Effects on Women 21:29 "Cold Plunging and Stress Resilience" 25:27 Hormetic Stress for Resilience 26:55 "Limits of High-Intensity Exercise" 30:06 Personalized Health via Self-Testing 34:56 "Family Routines Transform Life" 38:53 "Old-School Biohacking and Nootropics" 41:29 "Living Longer vs Dying Happy"