Have you tried this work out program? http://www.youtube.com/watch?v=TKCGe2Ezr��
If you are unhappy with your weight, ask your parents to take you to your doctor so that you can discuss options. Also you could discuss extra curricular activities that will get you out and about more often. Please realize that at your age you are still growing...so you ll probably lose the weight over time anyway.
WTF you are skinny enough check your BMI at this site http://kidshealth.org/teen/food_fitness/�� and if you go below underweight go eat 10 pies because i had a friend that became anaxit and she had to go 2 hospital and she just got incridibly sick it is worst that being overweight 4 sure
I m not helping you be unhealthy. You re fine the way you are. I d say you ve a problem right now. You sound like a candidate for an eating disorder. Talk your parents. :/