protein. join a sport, wrestling is coming up

then why the fuck don't you gain weight?

what sports do you do?

no exactly muscle building sports sir.

well i would think you would join sports that build muscle to gain more weight
but i guess i was wrong.

You need to eat more, dont say i eat a lot because you dont.

You need 5-6 full meals a day, gym & protein shakes. In very very simple terms.

Lift weights is the fastest method... as others say eat more high protein high carb foods to see maximum results.

Eat A Lot Of Food.

Eat meals high in complex carbohydrates. You should be constantly eating something, it should be a chore to eat, not something really that fun to do. But make sure to eat nutritious meals too, you don't want to put on sloppy weight.

If you want to build muscle eating alone won't do it. Unless you haven't reached that stage in puberty yet.

You need to start lifting weights. However, if you get good at it don't lift anything more than your own bodyweight until you have finished puberty. It can stunt growth.

Don't forget you don't need to *just* lift weights to put on lean muscle mass. There are plenty of other alternatives for gaining muscle. (Unfortunately, I still can't post links or pictures because I need 25 posts)

Isn't it good to be a bit thinner for track? Wouldn't gaining excess muscle or weight just slow you down?

No it's not as simple as *just*, high intensity sports and activities will do it too. Lifting is however, the quickest way to muscle mass.

And eating alone won't build muscle.

I wouldn't go to make such a broad statement as saying lifting is the quickest way to gain muscle mass, have you tried resistance bands? They actually even out undeveloped muscles in the body as they distribute resistance accordingly. In fact, studies have shown that resistance bands put more constant pressure on the muscles then lifting weights as with weights there is typically only one focal point where the weights and gravity are working together to put the maximum amount of resistance on the muscle.

And who said eating alone will build muscle?

Wow. Lots of good advice here. First of all, your sports of choice are definitely not helping...might want to consider dropping one all together, or replacing it with another sport. Wrestling might be good...it encourages u to build muscle, and being lighter can be an advantage, since you'll be in a lower weight class.

Second, u gotta lift weights...u wanna add muscle weight, not just fat. Most high schools i know of have a weight lifting class. Don't be afraid to sign up or go there afterschool if you can. Ask for help...no one will make fun of you if they know you are trying super hard, and most jocks will be flattered that you want their advice. Just be searious when you go...if you go to goof around or aren't trying, they'll see right thru that.

As far as food...sounds like you're eating alot already. Just make sure it isn't alot of junk.

Good luck with everything...let us know how it goes