What's the fastest way to lose weight for a 13 year old boy?

Teen age weight: The best way to loose weight is with control of diet and exercise. For most teens the fastest way to do this is to cut out sugary beverages from their diet (soda, juice, coffee drinks, gatorade, etc). From one 12oz sugary drink each day in addition to all the regular foods a person will gain almost 20lbs per year! cut that out and fast weight loss. Healthy weight loss is 1-2lbs/week.