Muscle strength as a brain-health proxy

Neuroscientist Dr. Tommy Wood breaks down what it actually takes to keep your brain sharp as you age. Drawing from his new book The Stimulated Mind, Tommy makes the case that movement is non-negotiable for brain health — and that even small amounts make a meaningful difference. From walking and resistance training to dancing and pickleball, different types of exercise protect different parts of the brain in ways that compound over time. The bottom line? You don't need a perfect plan. You just need to start.

Episode Overview:
(0:00) Intro/Teaser
(7:00) The Exercise Framework: From Snacks to Sprints
(11:00) The Norwegian 4x4 Study
(14:00) Lactate, BDNF & Why HIIT Is Good for Your Brain
(15:00) Resistance Training, White Matter & Decision-Making Speed
(17:00) Why Pickleball Beats the Recumbent Bike
(24:00) Stress, Cortisol & Inflammation
(31:00) Muscle as a Proxy for Brain Health
(40:00) Nutrition for Brain Health
(53:00) The Female Brain
(1:09:00) Brain Training: Languages, Video Games & the Power of Failing
(1:23:00) The After-Party with Dr. Stephanie

Resources mentioned in this episode: https://drstephanieestima.com/podcasts/ep460

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P.S. When you're ready, here are two ways Dr. Stephanie can help you:

Subscribe: The Mini Pause — My weekly newsletter packed with the most actionable, evidence-based tools for women 40+ to thrive in midlife.

Build Muscle: LIFT — My progressive strength training program designed for women in midlife. Form-focused, joint-friendly, and built for real results.

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