Just Move: Scientist Author Debunks Myths About Exercise And Sleep

Daniel Lieberman writes about the importance of exercise and the myths surrounding it in his new book "Exercised: Why Something We Never Evolved To Do Is Healthy And Rewarding." Some of the questions he addresses include, is sitting the new smoking? Is it bad to slouch? Do you really need eight hours of sleep? Is walking effective for losing weight? Does running ruin your knees? He writes from his perspective as a paleoanthropologist.

Listen to his interview on NPR’s Fresh Air below.