Advice: People will say chew lots of gum so you aren't as hungry, although it helps chewing gum in excess can lead to stomach ulcers, oh and drink lots of water.
Personal experience: I'm only 15 but i've always been in good shape (6'2 135 pounds toned)
Personal experience: I'm only 15 but i've always been in good shape (6'2 135 pounds toned)