| Hey man,
For starters... you're really young. And when I say that, I mean that your body isn't nearly as developed as it will be. Pretty much every part of your body has yet to fully develop, and when you're that young, A LOT of weight training can be detrimental to your body. There's nothing wrong with trying to be healthy at any age, but don't expect to look like Hercules before you're even in high school. To let you in on a secret, those "abs" your friends have probably aren't a sign of how muscular they are or aren't. At that age, a lot of kids metabolisms are so fast that they burn whatever food they take in so they have hardly any fat. Shoot, I know people that my age that have a "6 pack" but can't do 20 crunches. My advice to you would be to just try and live healthy. That includes eating things like veggies, fruits, meats, and whole grain type pastas. You're too young to really worry about sorting carbs from proteins or fats, so just be practical. This includes what you drink too... my old football coach called sodas liquid cocaine. I try and only drink things like water, gatorade, juices, or tea. When it comes to exercise, do whatever you feel like you can, but don't over do it. It sounds like you've got a decent amount of exercise in your daily life as it is. Just remember, you are young and your body is going to be changing a lot in the next couple of years. To me it looks like you'll do just fine.  | 
