Guess I'll stick myself up here. I'm 15, 5'5, weigh about 165 pounds. I'm actually in pretty good shape, a decent amount of the weight is muscle from martial arts training. But for aesthetic reasons I'd like to tone my abs more, and for general health reasons I want to improve my diet.
So far, I've started taking healthier things for school lunch - instead of meat-filled sandwiches EVERY DAY, I'm bringing mostly fruits, avocados, yogurt, that kind of thing. I'm cutting down on sugary foods too, and reminding myself of portions. It's just kind of hard because I have an early lunch and zero chance to snack later in the day, so I'm always REALLY hungry when I get home. :/
As far as exercise, when the weather improves I want to start biking a lot again, and I may look into this P90X thing. I also want to find a hula hoop because I've heard they do wonders for your abs and they're also super fun. Mostly I'm looking for simple, fairly quick exercises that I can do in a fairly small space (i.e. my room).