So that the nutrition of food can be fully absorbed and utilized, thereby improving the immunity of the body. Therefore, in order to regulate the intestinal function, we can eat fructooligosaccharides to change the pH value of the intestine, improve the absorption of trace elements such as calcium, iron and zinc, promote cell metabolism and improve immunity. The first stage of healthy food: tea, papaya juice, tomatoes, oranges, oranges and carrots. Drinking tea can enhance the resistance to bacteria. Adult blood depends on the liver, that is to say, the liver should be supplemented first, but there is a premise before the food supplement, that is, I absorb it well and need both qi and blood. I can go to the bookstore to buy some recipes related to invigorating qi and blood. In addition, you should exercise properly at ordinary times and go to bed early at night, preferably before 10 at night.