a lot, of course, depends on age and sex. Mostly, it revolves around food, exercise, and turning off television. Activity coupled with portion control three meals two snacks and no soda or juice--reduced fat milk and water only.
Higher fiber foods such as strawberries fill you up, snack on yogurt with honey and a few nuts (for the non allergic) frozen or other wise will be a treat. Greek pizza is better than greasy regular cheese etc...
Activity is the key and if you are working parents, it is hard. Keep in mind sport such as baseball don't reduce many calories, but swimming does. Dance does.
If you are apartment bound, find some one with a Wii and do the sports cycle.
There are many ways to be inventive. The simple rule is calories in vs activity.
Speak to your pediatrician and ask what she suggests.
Wayne Yankus, MD, FAAP
expert panelist: pediatrics