I have been working out since I was 16. I tried to keep up with it in college by going as often as I can. In my 20's I joined ballys but wasnt interested in gaining or become muscular. After the membership expired I joined 2 other gyms just to stay active. I was just going to the gym to stay in shape. I was flipping channels the other day and I saw these mma dudes who were 155lbs and were rip that is why I was asking this question. If I had to average the amount of calories I would guess 2000-2500. I know, its not enough.