Sitting down after a meal is really a no-no, but when you sit down after a meal, you should tuck in your abdomen and then your waist should be stiff. It is best to put a waist pad behind your back and lift your center of gravity upward, so that the weight will not be completely pressed on your hips and abdomen to avoid fat accumulation.

In addition, you can go jogging in the playground after the evening self-study, and do some sit-ups and pedaling before going to bed if you don't have time, which can achieve the purpose of body shaping.

Experience shows that only by doing aerobic exercise regularly (jogging for more than 20 minutes every day) can we achieve the goal of losing weight healthily and safely. I suggest you try to do it. If you really can't, wait until you graduate from high school.