It will definitely rebound. It's better to eat less and exercise more. If you want to lose weight, eat less staple food every day, but fruit must be supplemented every day. There is staple food because it contains glucose. If you don't eat staple food for a long time, it will lead to anemia. In addition, moderate exercise can also lose weight, but it is best not to exercise too much. It is better to exercise for ten to fifteen minutes.