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Getty ImagesQ: I cant stop working out! Is it possible to overdo it?

A: Actually, yes. Let your body be the judge. If you suffer from pain, muscle soreness that doesnt go away in a day, or loss of strength, speed, or endurance—all signs of overtraining—then you probably need a break from the gym to recover.

Theres also a psychological disorder called "exercise bulimia," or compulsive exercise, in which people work out excessively, often for hours at a time. They get so obsessed with sweating off unwanted calories that it negatively impacts other parts of their life, from their career to their relationships. If thats you, try talking to a therapist who specializes in eating disorders.