175. Justin Roethlingshoefer: Why Your Body Needs More Than "Healthy Habits" To Hea
6/23/202653 min
Your body is constantly repairing, renewing, and rebuilding itself. Hundreds of millions of cells are replaced every few months, which sounds incredible until you ask the question most people skip: if the body is designed to heal, why do so many people still feel tired, foggy, inflamed, slow to recover, or like something is off even when they are doing so many of the "right" things?
In this episode of Extend, I sit down with Justin Roethlingshoefer to bring that question back to the cell. Justin explains why healing is not just about what your body is trying to do, but the environment your cells are trying to do it in. If that environment is missing oxygen, overloaded with toxins, or depleted of nutrients, your body may be creating new cells without giving them the conditions they need to thrive.
Justin Roethlingshoefer is the creator of OWN IT, a coaching platform and app built to help people take ownership of their health through HRV, VO2 max, sleep quality, cellular testing, personalized rhythms, and practical behaviour change. His work helps people cut through the noise of the wellness space and understand what their body actually needs at the cellular level, which is what makes him the right person to explain why feeling better may require more than another supplement, device, or protocol.
What's Discussed:
(03:46) Why your body's ability to repair and renew starts at the cellular level.
(07:59) The three things your cells cannot live without.
(08:36) Why the environment your new cells enter can affect how well they thrive.
(12:33) How VO2 max reflects oxygen efficiency at the cellular level.
(25:37) Why sleep quality matters for cellular detoxification.
(34:30) Why standard blood work may not explain why you still feel off.
(44:24) Why good habits can fall apart inside disordered rhythms.
Listen to this episode of Extend to understand why your body may be trying to heal, why it may still feel like something is not working, and what your cells may need before your next supplement, wearable, protocol, or health habit can actually make the difference you are looking for.
Free resources:
Quality sleep is the most underestimated longevity accelerator. Download this sleep optimization workbook to transform sleep into a powerful longevity practice: https://www.drshah.com/sleep
Thank You to Our Sponsor:
Next Health Longevity Summit: Head to next-health.com/summit to secure your spot at the first ever Next Health Logevity Summit in Nashville on 9/12.
Momentous: Head to livemomentous.com/fiber and use code DRSHAH for up to 35% off your first order.
Learn More About Dr. Darshan Shah:
Website: drshah.com
Clinic: next-health.com
Instagram: @darshanshahmd
Learn More About Justin Roethlingshoefer:
Website: ownitcoaching.com
Holy Health Website: holyhealthbook.com
Instagram: @JustinRoeth
Clips
Transcript preview
First 90 secondsDarshan Shah· Host0:00
Before we get started with this episode, I'd like to invite all of you to the first ever Next Health Longevity Summit happening in Nashville, Tennessee at the Conrad Hotel on Saturday, September 12th, 2026. This is an all-day summit where you're gonna be hearing from some of the best speakers in longevity medicine, including Dr. Vonda Wright, Dr. Luisa Nicola, many of the podcast guests that you've heard here on the Extend podcast. And of course, I'm gonna be there curating the entire day. We also have incredible vendors coming, so you can try the latest technologies in health, wellness, and longevity. Go to next-health.com/summit and buy your ticket today. We only have 400 spots, and they're going quickly. That's next-health.com/summit. I look forward to seeing you all there. [upbeat music] Welcome to Extend with me, Dr. Darshan Shah, a podcast dedicated to cutting-edge science, research, tools, and protocols designed to help you extend your health span. Having become one of the youngest doctors in the country at the age of 21 and trained and board-certified at the Mayo Clinic, I've accumulated three decades of practice as a board-certified surgeon and longevity expert. Over that time, I've discovered that a mere 20% of health knowledge yields 80% of the results when it comes to your health span. We are living in a new era where we are creating a new healthcare system no longer focused on disease management, but achieving optimal health and vitality. Join me as I interview world-renowned experts, offering you a step-by-step guide to proactively avoid disease and, most importantly,