First, the basic principle of fast food is to choose two days of the week for fast food, try to reduce the diet on the day of fast food, and eat normally on the other five days, as long as there is no serious overdose.

Secondly, according to the widely respected Michael principle, it is better to prolong fasting time than to eat fewer meals. A small amount of meals is not good for your health, and the longer you don't eat, the better for your brain.

Thirdly, according to the researcher's explanation, when people eat, their bodies are hoarding fat. After fasting for several hours, their bodies start to burn fat, so as long as they fast, they can lose weight steadily.

Fourth, the food you choose on the fasting day must be high in protein and low in blood sugar, which is a magic weapon to reduce hunger.