If you don't live too high at home, keep climbing stairs every day.
If the school is not too far from home, insist on walking to school.
Don't deliberately go on a diet, it won't do. Eat less snacks and fried food. Eat less KFC and McDonald's.
Boiled water instead of drinks, or freshly squeezed juice at home.
Dance every day if you have nothing to do. You can grow tall and thin legs.
If possible, it's best to go swimming and swim back and forth in summer. There is no speed, and it doesn't matter if you slow down, just to lose weight. This is not a competition. Don't eat fried food after exercise, beef is better ~ sausage ice cream is not good. Not even potato chips. Swimming can help you grow taller and lose weight.
Insist on eating vegetables every day. No matter what dishes.
There is another one that I don't like myself, but the effect is not generally good. . Is to study hard. This kind of work consumes your brain and makes you lose your appetite. You'll lose weight yourself. At that time, look at your weight when your grades went up,,, and you went down.