Sep 18, 2011 #1 A ArvinNad New member Joined Sep 18, 2011 Messages 0 Reaction score 0 Points 0 My son is 12 and is turning 13 and he needs to build some muscle for basketball. He has high metabolism and eats well but does not usually gain weight. Any advice for building weight, muscle, or height?
My son is 12 and is turning 13 and he needs to build some muscle for basketball. He has high metabolism and eats well but does not usually gain weight. Any advice for building weight, muscle, or height?