Light fasting is a new type of weight loss method, which means that in a week, two discrete days are selected for light fasting and the remaining five days are for normal eating. Light fasting is also called 5+2 fasting, that is, to choose two days a week, only a very low calorie intake every day, for example, girls can only take 500 kcal per day, while boys can take 600 kcal per day, and the other five days of normal diet. The two days of light fasting can be moderate consumption of some vitamin-rich fresh vegetables and fruits, but also moderate consumption of some eggs, milk, etc., to supplement high-quality protein. At the same time, you should avoid consuming foods with high glycemic index such as rice and doughnuts, as well as foods with high fat content such as pork and cakes. If you want to lose weight through light fasting, it is recommended that you consult a professional doctor in detail and follow the doctor’s instructions for light fasting to avoid adverse consequences.