I try and watch my food intake. My mom has always been skinny, but recently she broke up with her boyfriend and got fat. She's all depressed and shit, so I use her as an example as why not to get fat. I have been skinny all my life. I'm 5'6", and I only weigh 115 lbs. I'm 16 too, but I watch my diet more than most 16 year olds. I'm a guy but all the girls say I watch my fats like they do
, but what I usually do to make sure I'm not getting fat is to take my finger and run it along the grooves of my abs (6 pack... whatever you wanna call it) and make sure there is no fat there. As soon as I feel something I'm signing up for a subscription to the nearest Nautalis!!!