I am 14 years old and 5'8'' and really to be honest I don't know how much I weigh. I got a treadmill for my birthday and started using it yesterday. I was thinking of eating 2000 calories then burning 200 calories on the treadmill. I take a vitamin everyday. I was hoping to lose 20 pounds. I used to be skinny when I was younger but then I seem to have put on some pounds. I want to weigh about 120 or so pounds. I was thinking of walking on the treadmill for about 4 or 5 days a week. Does this plan sound like it will be successful? If you need any more information let me know! Thanks 
I would have to guess I weigh about 140.
I would have to guess I weigh about 140.
I would have to guess I weigh about 140.
I would have to guess I weigh about 140.