Eat normally in the morning and at noon, but don't be too full. The point is to eat less at night, basically apples or a cup of yogurt. I don't recommend boys to eat as little as I do.

You can't lose weight too fast, otherwise it won't work. I lost too fast before, but it was easy to rebound later.

Boys may eat less at night, it may be difficult to persist, and they will be hungry.

Liquid food can be used instead. It is possible to lose weight by reducing the weight of food.

If you cooperate with exercise, you should do aerobic exercise, which consumes more than anaerobic exercise. Science high school biology has this chemical formula. So it's easier to stick to swimming or jogging in the gym. But don't exercise too much, it will promote appetite.

If you have fat on your stomach, you must eat lightly and reduce the intake of fat. Sometimes you can eat boiled eggs with protein. On the one hand, it promotes weight loss, on the other hand, it tightens muscles. Eating more fruits is also very useful, which is my sister's experience. She also lost weight in 20 days 10 kg.

The most important thing is to ensure normal defecation.

If you want to exercise your muscles, you should pay attention to high protein and don't lose it too fast, otherwise it will definitely be ineffective. I can't lose more than 20 kilograms. I've used everything. My experience must be: don't lose weight too fast (no more than 10 kg a month), have high protein and do some aerobic exercise (preferably one hour a day, five days a week).