15 July 2013, 17:00
Hello, my name is Mopster and I need to put on some weight! 
I am 13 years old, 5'11 and 7.8stone. The problem is I need to put some weight on without becoming fat or unhealthy.
Any ideas?

I am 13 years old, 5'11 and 7.8stone. The problem is I need to put some weight on without becoming fat or unhealthy.
Any ideas?