[Neoxphuse]

At 5-10, your weight should be around 160 I think.

I'm 5-7 and about 150 +/- 5 lbs.

First thing is you need to put on some pounds, as everyone here as mention. I recommend you hit the gym and do some heavy weight lifting, and drinking protein shakes. This will get you bulk muscle. Still eat healthy. A lot of people say just eat a lot of fast food, but seriously, those suck. Stick with eating healthy.

Once you do that, focus on toning yourself down.