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Boundless Life

How To Build A Better BRAIN (+ Ketamine, Nicotine, Alcohol & More!) With Dr. Tommy Wood.

Boundless Life

Ben Greenfield

Fitness, Education, Self-improvement, Health & Fitness

4.65.3K Ratings

🗓️ 16 April 2026

⏱️ 73 minutes

🧾️ Download transcript

Summary

Full Show Notes: bengreenfieldlife.com/stimulatedmind

In this episode with Dr. Tommy Wood, you'll explore what actually determines how well your brain functions across your entire lifespan, from the inputs that drive cognitive development in infancy all the way through the habits, environments, and daily choices that either accelerate or protect against decline in adulthood and old age, all grounded in the research behind his new book, The Stimulated Mind: Future-Proof Your Brain from Dementia and Stay Sharp at Any Age

You'll discover why the modern world leaves you simultaneously overstimulated by technology and understimulated in the ways that actually build cognitive capacity, why lactate from intense exercise may be one of the most underrated brain health tools you have, and which types of exercise target different parts of the brain. Dr. Wood also gets personal on his own diet and supplement stack, breaks down what AI is actually doing to your cognitive capacity, and gives his honest take on alcohol, nicotine, ketamine, and exogenous ketones.

You can purchase his new book, The Stimulated Mind, here.

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See omnystudio.com/listener for privacy information.

Transcript

Click on a timestamp to play from that location

0:00.0

My name is Ben Greenfield, and on this episode of the Boundless Life podcast,

0:05.0

how we use our brains as the primary determinant of how they function.

0:08.5

You might think that we are at the same time overstimulated,

0:12.3

and then we're also under-stimulated from like a skill development.

0:15.9

We can change our environment, and as a result, we know we can change our brains.

0:20.7

Whatever you want

0:21.1

your brain to be good at is what you should be doing on a daily basis, because that's what

0:25.3

helps build and maintain function. Welcome to the boundless life with me, your host, Ben Greenfield.

0:32.4

I'm a personal trainer, exercise physiologist, and nutritionist, and I'm passionate about helping

0:37.4

you discover

0:38.0

unparalleled levels of health, fitness, longevity, and beyond.

0:48.8

Most of us just guess when it comes to our supplements, which can make expensive pee. But your body

0:57.8

deserves better. So there is a form of testing called epigenetic testing. Epigenetic testing goes

1:05.5

deep, deep, analyzes over a million different data points to create a simple, actionable plan for your body,

1:13.2

including what kind of supplements you should take and a lot of other deep insights into your health.

1:20.5

Test way more than just the average blood test, even though it's a quick, at-home finger prick.

1:26.6

True age measures 180 plus biomarkers and then provides you with

1:31.2

personalized actionable steps to improve your health to boost your energy and to slow aging you get

1:37.6

digital results with a 90 day actionable plan you follow the recommendations on your plan for 90 days, then you retest to see

1:46.4

your progress. So again, this is advanced epigenetic testing to analyze a crap ton of biomarkers.

1:54.4

This is used by top longevity clinics and help professionals, not just at-home users.

1:58.8

So easy. Just prick your finger. You don't have to drive to a lab.

...

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