How tall are you? It matters a lot.
Have you tried taking a hefty dump?
do insanity it will help u... i have two weeks doing it and i could see results already...
Insanity is WAY TO MUCH for a teenager!!! More like an adult work out, but I do love the results I have seen for people! :)
I agree with Stankfanger. Put the garden hose up your butt and let'er rip. When you can't take it any more, bend over and roar like a hippo. Mud will shoot out in projectile fashion. If you don't like your parents, aim it at their bedroom door. You're welcome.
Have you tried Roca Labs formula. If you are 13 or more then you can. It really helps. :)
As you are young so you should carry on exercises like running, cycling, swimming and some others.You should also continue to play sports because it will help you to lose body weight fast.Another thing is that you should stop eating fast food.In this way you become slim and smart.