More isn’t always better—experts reveal how pushing your body too far can backfire, even in a fitness-obsessed world.

While consistent, moderate exercise improves physical and mental health, excessive exercise can be harmful. People with a predisposition toward certain anxiety disorders may develop exercise addiction ...

As good as exercise is for you—and it’s very good for most people—too much of good thing can have negative consequences. Exercise puts physical stress on all your body parts and can ultimately lead to ...

This is how one of the participants in Holly Thorpe’s recent study of recreational women runners described her relationship with exercise. She exercised a great deal, so much so that, like others in ...