1. Set aside 12 to 16 hours of "empty window period" in the stomach every day. If you don't eat from 6 pm to 1 am the next day, you will eat normally the rest of the time;

2, 5: 2 fasting method, choose two days in a week at will, eat food with no more than 5 calories every day, and eat normally for the other five days;

3. fasting every other day, such as eating normally on Monday, eating food with no more than 5 calories on Tuesday, and eating normally on Wednesday, and so on.

4. Note: During fasting, foods should be low in calories and high in nutrition, such as fruits and vegetables, light soup and porridge. In addition, when fasting, you should also exercise moderately to improve metabolism and prevent the body from consuming muscles.