New research suggests your body may quietly compensate for the calories you burn—changing how we understand weight loss and fitness.

High-intensity exercise, like sprinting or lifting heavy weights, will keep you fit and strong. But it will also provide great benefits for you brain, a new study has found. It has long been known ...

Decades of evidence shows that exercise leads to healthier, longer lives. Researchers are just starting to work out what it does to cells to reap this reward. When Bente Klarlund Pedersen wakes up in ...

Donald M. Lamkin receives funding from the National Institutes of Health, the Breast Cancer Research Foundation, and the UCLA Norman Cousins Center. The global fitness industry will generate over ...