Your Body Can Either Grow or Repair — Not Both, Here’s Why (Ft Renee Fitton)

Why is it that we chase longevity like it’s a number, yet ignore the daily behaviors that are aging us from the inside out? Most of us think longevity is about adding years. But what if it’s really about removing what no longer serves you at the cellular level and at the identity level? Renee Fitton — registered dietitian, longevity specialist, and one of the leading voices in fasting-mimicking science (VP at Prolon) — breaks down the biology of renewal… and the psychology that quietly shapes our habits. Show Partners: Get your MENTAL FITNESS BLUEPRINT here ! A special thanks to our mental fitness + sweat partner Sip Saunas Personal Socrates : Better Question, Better Life Connect with Marc: Timestamps: 00:00 — The question that opens every interview: “Who are you?” 03:00 — Perfectionism, ambition, and living in the imperfect 07:00 — Personality tests, self-work, and using tools like ChatGPT for reflection 11:00 — Preparing for the Hoffman Process: deep psychological self-work 15:00 — How to prepare your body for intense personal growth 16:00 — Alcohol, sleep, and energy management before a retreat 18:00 — Why plant-based nutrition supports repair and rejuvenation 21:00 — Growth mode vs repair mode: the biology behind it 23:00 — Autophagy explained: your body’s cellular vacuum cleaner 25:00 — What is the fasting mimicking diet? 29:00 — Why prolonged fasting (3+ days) activates deep repair 31:00 — The mental shifts that happen during fasting 33:00 — Behavior change, food psychology, and identity 34:00 — Type 2 diabetes study: self-initiated behavior transformation 37:00 — Why five days can change your long-term habits 39:00 — Why water-only fasting feels harder 41:00 — How often should you fast for longevity? 44:00 — Gratitude journaling as a daily mental fitness tool 46:00 — The power of daily movement for emotional regulation 47:00 — Renewal at the cellular and personal level * Special props 👇 Music: Clouds - Joakim Karud See Privacy Policy at and California Privacy Notice at . Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

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Your Body Can Either Grow or Repair — Not Both, Here’s Why (Ft Renee Fitton) is an episode from Behind The Human with Marc Champagne by Marc Champagne.

This episode is 00:48:03 long.

This episode was published on Feb 15, 2026.

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