No pain, no gain. You know you have to bust your butt if you want to be in great shape. But is there such thing as too much exercise? You bet, says John Gaglione, a strength coach, fitness expert, and founder of GaglioneStrength. “Sometimes you need to back off and take it easy in order to keep making progress,” he says. “The more fit and the stronger you become, the more recovery you need.” Of course, everyone’s different. So attaching a hard-and-fast definition to “too much” can be tough, Gaglione says. But there are some obvious (and not-so-obvious) signs that you need to give your body a break.