Cabbage...you are absolutely right. It's kinda funny because he always tells me you grow when you sleep, so he try's to get as much sleep as he can, which usually means going to bed earlier than I thought he would. 
But we really don't talk about height too much. He knows it will be what it is...and no, I'm 5'10 and his mom 5'7, so we didn't get that lucky. He eats very healthy and he try's to have a protein shake once a day after practice, so the rest will be left up to nature. 