Advaik is pretty much on the money (don't know if your dumb and I wouldn't call you short - and your not obese or anything) exept that I feel you would probably benifit from a vitamin/mineral supplement. Other than that, stop eating junk and start eating right. At 15 exercise all you can - run, lift, bike, marathon masturbate, etc, etc. Do not sit infron of the tv or that computer all day. Find some activity(s) to do every day all day.freshprince said:
I was "solid" at 15 so I started to hit the gym and got better gains than all of my skinny friends. You should get a set of weights to use at home, all u need is a bar and dumbells, and a few disks that u can build on when u get stronger. If u can get a bench get one also. Stick to the good old compound movements...military press, behind the neck press, bent over rows, ded lifts, upright rows, bicep curls, tricep extentions, and if u get a bench....bench press, close grip bench press, etc... Train when ever u want something to do, I remember when i was 15 i had my weights in my room and at night when i couldent sleep i would train. Of course remember you grow when u rest so when u feel u need a day off take it. Cut out most of the junk food, but dont cut back on the good foods.
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