Exercise addiction, also called exercise bulimia, has much of the same side effects as eating disorders like anorexia nervosa or bulimia. Sufferers can experience deathly low body weight, injury to self, lack of self-worth, and depression.

How do you know when you’ve become addicted to exercise? When working out starts to take over your life instead of fitting nicely into your schedule, you may have a problem. Classic signs of exercise addiction include working out despite an injury or illness, exercising for hours on end each day, doubling up the day after you had to miss a workout, and exercising despite overwhelming exhaustion. Exercise bulimics also allow workouts to become their top priority, even if it means canceling prior obligations or letting down or hurting loved ones.

It can be difficult to recognize exercise addiction in yourself, but it’s probably easier for an outsider to see. So if someone is telling you they think you may have a problem, listen up and get professional help.