I don't normally exercise at all, but I did on Sunday for four hours, because I was upset.My last week was pretty rocky, and I compensated by exercising for hours, even though I was already sore. I kept going until I felt sharp pains in my lower abdomen. I tend to lash out when frustrated, and I feel like I have to get rid of the extra energy. Lately, I can't seem to quit. I had some dark thoughts lately about exercising until I was too sore to move, so that I wouldn't keep calling my ex. I was just wondering if this counts under true "self-injury". I always hear self-injury associated with cutting or hitting oneself, but never this.