I have two step sons, 11 and 14 and they are eating us out of house and home. We can not keep enough food in the fridge. I just made a large meal, turkey burgers with cheese and buns, a big garden salad, a large bowl of pasta noodles, a bowl of peaches. They ate all of that just ten minutes ago and want more food. We offer seconds at meals. They are also eating 8-10 snacks a day. They are both active and thin but I feel they are eating too much. Is this just part of growing? Or is it reasonable to limit the amount of snacks they are eating?