One of the major benefits that come with getting the right amount of exercise is a great night of sleep; but if you’re pushing your body too hard in the gym, you could be keeping yourself up. A telltale sign of overtraining is a problematic sleep schedule—which means you either sleep too much or you have trouble sleeping at night. When your body needs more time to repair, it can lead you to get too many hours of shuteye. Meanwhile, other people’s bodies react to overtraining as a stressor, which can alter hormone levels and make it tough to sleep at all.