Sports will help

To eat ice cream for gaining weight? First time to hear about it. It is very cute.

My son was such a picky eater (eat very little at dinner and lunch), and he is very skinny. Now every since he started the camp which has swiming everyday, he came home saying he is hungry. He can eat more at dinner table, and asks for more meat now.

I don't know what I can do after summer to let him have an active schedules.