I am extremely paranoid about gaining weight. I recently lost almost 20 lbs on the HCG diet and don't want to put it back on. I'm not really overweight, but I'd like to lose a little more (5'4'' and 137 lbs). I feel guilty when I eat, so I make up for eating by exercising. (I eat between 1600-2100 calories, depending on the activities of the day.) So for about a month now, my average exercise week consists of 1.5-2 hours of intense exercise (things like spin and pump classes) about 6 days a week. Is this a big problem, or am I ok doing this? I don't want to hurt myself, but I don't know what else to do... I feel guilty ever missing a good hard workout.