Is it stupid of me to try to lose 30 pounds? I am a 17 year old boy, I'm 5'9, and I weigh 182 pounds. HELP! I would like to get down to about 155 pounds. Right now, I am not glaringly overweight, I don't even think that I look chubby. I have a pretty decent amount of muscle, which I would like to keep for the most part. I don't want to be a twig, but I want to have some muscle definition in my stomach. Right now, I don't have a huge pot belly, but it's very... you know what I mean. So, how should I lose the weight? I only got 'overweight' in the past few months, because I've had my fair share of junkfood binges lately. I've already started to cut junkfood completley out of my diet, but I also don't want to starve myself. What kind of exercises should I do? I'd rather not do weight lifting, but I will if I have to. Any suggestions?

Summarized question: What exercise will help a 17 year old male lose weight?