Boys must do two things to lose weight: first, keep your mouth shut; Second, keep your legs open. Keeping your mouth shut means eating as little as possible for three meals a month, especially for dinner, which should be based on light vegetables and fruits and less red meat. Opening your legs means exercising every day, jogging for half an hour every morning, afternoon and after dinner. In short, as long as you keep your mouth shut and open your legs, you will definitely lose weight.