Teen boys are legendary in their appetite for food, food, and more food...they drink right out of the milk jug, take whole slabs of roast beef, and a common complaint heard by parents worldwide:
"He's gonna eat us out of house and home!!!"
"What do you have, a bottomless leg?!"
"OMG, he wants to have 5 of his friends over for the night...!"
Food. It's what young men eat. And they play a LOT of football and/or soccer, which burns off the food and develops muscles.
*hugs* from a new cheer leading squad member!