This week Cara and our assistant producer Alex chat with Dr. David Raichlen, a professor of biological sciences at the University of Southern California. We discuss his work on physical (in)activity in the Hadza people and why “how” we rest matters. We also delve into how applying evolutionary perspectives may help us slow down brain aging and why no one has thought of installing squatting racks in rodent cages.

Read Dr. Raichlen’s paper on “Sitting, squatting, and the evolutionary biology of human activity” here:…2&isAllowed=y
and his Scientific American article on “Why your brain needs exercise” here:…s-exercise/

Email Dr. Raichlen at
And learn more about his work at

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