If the compulsion is driven by a desire to lose weight, despite being within a healthy weight range, or if the compulsion is driven by guilt due to bingeing, then, yes, this compulsion to exercise is a dimension of an eating disorder. There are also individuals who compulsively exercise because that has become their sole way of coping with stress or emotions. These individuals may not be as motivated by body image distortions or desires to lose weight, but rather by an inability to tolerate emotions and daily stressors. This is also a dimension of an eating disorder.