Why Exercise?

Published: Sept. 17, 2021, 8 a.m.

Exercise is a relatively recent phenomenon. After all, it\u2019s difficult to imagine a caveman on a treadmill. And it\u2019s 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.

\n\n

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?

\n\n

Daniel Lieberman, professor of human evolutionary biology at Harvard University and author of the book \u201cExercised: Why Something We Never Evolved to Do Is Healthy and Rewarding,\u201d has some fascinating answers.