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

EPISODE · Feb 15, 2026 · 48 MIN

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

from Behind The Human with Marc Champagne · host Marc Champagne

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 SaunasPersonal Socrates: Better Question, Better LifeConnect with Marc: https://konect.to/marcchampagneTimestamps:00:00 — The question that opens every interview: “Who are you?”03:00 — Perfectionism, ambition, and living in the imperfect07:00 — Personality tests, self-work, and using tools like ChatGPT for reflection11:00 — Preparing for the Hoffman Process: deep psychological self-work15:00 — How to prepare your body for intense personal growth16:00 — Alcohol, sleep, and energy management before a retreat18:00 — Why plant-based nutrition supports repair and rejuvenation21:00 — Growth mode vs repair mode: the biology behind it23:00 — Autophagy explained: your body’s cellular vacuum cleaner25:00 — What is the fasting mimicking diet?29:00 — Why prolonged fasting (3+ days) activates deep repair31:00 — The mental shifts that happen during fasting33:00 — Behavior change, food psychology, and identity34:00 — Type 2 diabetes study: self-initiated behavior transformation37:00 — Why five days can change your long-term habits39:00 — Why water-only fasting feels harder41:00 — How often should you fast for longevity?44:00 — Gratitude journaling as a daily mental fitness tool46:00 — The power of daily movement for emotional regulation47:00 — Renewal at the cellular and personal level*Special props 👇Music: Clouds - Joakim KarudSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

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 SaunasPersonal Socrates: Better Question, Better Life Connect with Marc: https://konect.to/marcchampagne 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 https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

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

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This episode is 48 minutes long.

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This episode was published on February 15, 2026.

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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...

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