The CDC and the President's Council on Physical Fitness offer the following tips:

1. Eat more fruits and vegetables. Go for at least five servings a day.

2. Get off your duff. Doctors recommend 30 minutes a day of moderate exercise. Walking to and from school or a friend's house counts!

3. Watch less TV. Believe it or not, studies show kids who watch more TV are more likely to be overweight. TV watching uses up time that could be spent in more active pursuits. And exposure to tons of yummy-looking junk food ads can give you the false feeling that you're hungry.

4. Give yourself a break. Don't obsess over looking like models in magazines and calendars (Those pictures are airbrushed anyway). Visit your doctor: he or she will tell you if your weight is within the range of normal. If you are only a little overweight, you can probably slim down by making small changes in your eating habits -- cutting out soda or joining a sports team.

5. Drink water. (Your body is 98 percent H2O). Water flushes out toxins and helps you feel fuller.

6. Foods aren't good or bad. You can fit in a higher-fat food, like pepperoni pizza, at dinner by choosing lower-fat foods at other meals. And don't forget about moderation. If two pieces of pizza fill you up, don't eat a third.

7. Read the labels. Almost every item in the kitchen has important info right on the label. When you are lookup up calories and fat, don't forget to check the portion size! It might be a lot smaller than you think!

8. Start your day with breakfast. Breakfast fills your "empty tank" to get you going after a long night without food. And it can help you do better in school.

9. If you are on a strict diet, let yourself have a small treat once in a while (but not every day!). That way you won't feel starved or cheated.

10. Talk to someone. If you're unhappy about your weight or eating habits, talk to your parents, doctor, or school nurse. There are people out there who can help.