With the latest findings about the mental and physical benefits of exercise, personal stories from scientists and laypeople alike, as well as researched-based prescriptions for readers, Gretchen Reynolds shows what kind of exercise - and how much - is necessary to stay healthy, get fit, and attain a smaller jeans size. Inspired by Reynolds' wildly popular fitness and exercise column for The New York Times, her book explains how exercise affects the body in distinct ways and provides the tools readers need to achieve their fitness goals, whether that's a faster 5K or staying trim. It also includes the revelation that male genitals shrink with age, if a man is mostly sedentary - but not if he regularly exercises...
