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WGBH

Innovation Hub looks at how to reinvent our world – from medicine to education, relationships to time management. Great thinkers and great ideas, designed to make your life better.

2017 WGBH Educational Foundation

Innovation Hub looks at how to reinvent our world – from medicine to education, relationships to time management. Great thinkers and great ideas, designed to make your life better.

2017 WGBH Educational Foundation

Why Exercise?

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September 17, 202149min 51sec

Exercise is a relatively recent phenomenon. After all, it’s difficult to imagine a caveman on a treadmill. And it’s safe to say that paleolithic humans never pumped iron. But something changed as we moved from the plow to the Peloton. Exercise - physical exertion for the purpose of improving health or fitness - became a huge part of modern life, and a nearly $100 billion global industry.

But why do we spend so much time and money at the gym or on the track and does it actually help our well-being? And why is exercise, at least for some of us, such a miserable experience?

Daniel Lieberman, professor of human evolutionary biology at Harvard University and author of the book “Exercised: Why Something We Never Evolved to Do Is Healthy and Rewarding,” has some fascinating answers.