Ok, I am a male who just turned 16 last november. Then I weighed about 215 ibs and am only about 5"9. So my normal day would just be to go to school and eat lunch. It started out ok, but then I wanted to lose it faster...So I started throwing away a sandwhich, and just eating pretzels and peanuts. Well I got down to about 165 ibs...And then I decided I would stop eating for a week at a time, and then have a sandwhich or something on the weekends. I am also exercise crazy. I finally got down to the point of 140 ibs. I am finally eating a little again. Yesterday I had a half a turkey sandwhich for lunch, and a half can of chicken noodle soup for dinner. But after I eat lunch and get home from school...All I do is go to my room and exercise. I run for about 15 minutes, then I do crunches, sit-ups, pushups, etc, then I go get on a nordik trak ski machine for about 5 minutes at a time)...Then after dinner, I feel fat so I go and exercise again doing the same exact thing, because I dont want to gain any of my weight back...I mean I dont think id be horrified if I gained 5 ibs, but I dont want to look like ive gained which is what I look like to myself everytime I eat. I dont know what to do.