Why Exercise is Medicine for Your Brain with Dr. Brendon Stubbs
The Thick Thighs Save Lives Podcast
Constantly Varied Gear
4.9 • 724 Ratings
🗓️ 6 January 2026
⏱️ 52 minutes
🧾️ Download transcript
Summary
What if the most powerful mental health tool isn’t another app, supplement, or productivity hack, but movement? In this episode, we sit down with world-renowned researcher and clinical physiotherapist Dr. Brendon Stubbs to explore the science behind exercise as prevention, treatment, and recovery support for mental health.
As the head scientist of the Amazon Prime documentary Mind Games: The Experiment, Dr. Stubbs explains how physical training sharpened the brightest minds at the top of their games.
In this episode, we unpack why exercise helps depression even when motivation is low, how just 15 minutes of movement can change brain function, and why the fitness industry has failed people with its obsession over aesthetics. This is a powerful, compassionate conversation about identity, self-efficacy, and using movement as a mental health tool. If you’ve ever felt “too tired,” “too depressed,” or “too busy” to move, this episode is for you.
Links:
https://www.drbrendonstubbs.com/
IG: https://www.instagram.com/drbrendonstubbs
(00:00:00) Welcome to the podcast
(00:03:10) Dr. Stubbs’ path into mental health research
(00:08:37) Movement for feeling better vs. aesthetic goals
(00:12:55) Inside Mind Games: The Experiment
(00:17:55) Problem solving metrics measured in the Experiment
(00:21:00) What surprised the participants and researchers most
(00:23:50) What exercise actually changes in the brain
(00:34:33) How do we get started moving when we are depressed?
(00:39:30) The minimum effective dose of movement as medicine
(00:44:00) Lifestyle behaviors like sleep and nutrition in the context of mental health
(00:46:59) How to start to today and what to do tomorrow
(00:50:53) Where to find Dr. Stubbs
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Transcript
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| 0:00.0 | When we're talking about toolboxes to help, whether be depression or anxiety or PTSD, |
| 0:05.1 | we're going to talk about exercise in this context as a part of a toolbox. |
| 0:08.8 | Movement is medicine. What's the minimum, like, effective dose of movement that still provides |
| 0:13.9 | mental health benefits? When we're looking at large groups and numbers of people, we've measured, |
| 0:19.2 | what is the minimum amount so people start to feel |
| 0:21.1 | like a mental uplift and we've come across this number which we've looked at you know |
| 0:25.4 | thousands of data points about minutes and seconds is the amount where most people tend to feel like |
| 0:31.6 | a meaningful uplift in their mind and some people think that's a lot less and some people think |
| 0:37.1 | not as much but that's just that less and some people think not as much, |
| 0:38.1 | but that's just that small amount of movement. People can see a real meaningful uplift. |
| 0:42.7 | What if one of the most powerful tools for mental health wasn't found in a pill bottle, |
| 0:46.5 | but in movement? This week in the TTSL podcast, we're joined by Dr. Brendan Stubbs, one of the |
| 0:51.5 | world's leading voices on the science of physical activity and mental health. |
| 0:55.6 | Dr. Stubbs is a world-renowned researcher and clinical physiotherapist based at King's College, London, |
| 1:01.7 | ranked among the top 0.1% in most cited scientists globally. He's published over 800 academic papers |
| 1:09.2 | helped lead international clinical guidelines for organizations like the world, Psychiatric Association, and shaped how the world understands exercise is both preventative and treatment for depression. |
| 1:20.9 | Most recently, Dr. Stubbs was the head of science behind the Amazon Prime documentary Mind Games, The Experiment, which aired in over 30 countries |
| 1:28.5 | exploring how movement can sharpen even the most elite cognitive performers. |
| 1:33.9 | In this episode, we dive deep into the evidence, how physical activity impacts the brain, |
| 1:38.8 | what the science really says about exercise and depression, and how small, realistic changes |
| 1:43.5 | movement can make meaningful |
| 1:45.0 | differences to mental health. |
... |
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