Exercise

Bechdel's new graphic memoir is about her lifelong obsession with exercise. She says she has a "predisposition of being extremely self-conscious and very caught up in my head" — and exercise helps.

Daniel Lieberman is a professor in the department of human evolutionary biology at Harvard. He says that the notion of "getting exercise" — movement just for movement's sake — is a relatively new phenomenon in human history. His new book is Exercised: Why Something We Never Evolved to Do Is Healthy and Rewarding.

From sports drinks to cold and heat therapy, journalist Christie Aschwanden looks at the science of exercise recovery.

Nutritionist Nathan Pritikin outlines his ideal diet to curtail heart disease and keep weight low. He recommends eschewing dairy and sticking to low-fat, low-protein, unprocessed foods.