First of all, you can drink more yogurt and stick to a balanced diet. If people drink too much, are nervous or have an unbalanced diet, their disease resistance will be weakened. To correct this imbalance, we must rely on health-preserving bacteria, which are contained in yogurt.

Second, drink more boiled water, it must be boiled water, so as to keep the mucous membranes of the nasal cavity and oral cavity moist. Drinking more water can also make people feel fresh and energetic. Boiling water has ideal physiological activity on human metabolism. Water easily penetrates the cell membrane and is absorbed by human body, which enhances the activity of lactate dehydrogenase in human organs, thus effectively improving human body's disease resistance and immunity. Especially the first cup of cold boiled water in the morning is particularly important.

Third, vitamin foods. For people with decreased immunity, we should eat more foods rich in vitamins in our daily life. This kind of food can help us quickly enhance our immunity and resistance, especially foods rich in vitamin A, and we should pay more attention to eating them, such as dairy products, eggs and beans. These foods are rich in vitamin A, which can effectively improve human immunity. In addition, there are all kinds of fresh fruits and vegetables, which are also rich in vitamins.

Fourth, the liver of animals. People with weak immunity should also pay attention to eating more animal liver foods in daily life, such as pig liver, pig kidney and sheep kidney. The nutrients contained in these foods are also conducive to the improvement of immunity. The viscera of these animals are rich in trace elements, such as C, Zn, Cu, Mg, Fe, folic acid, vitamin B6 and vitamin B 12. Eating more in daily life will be very beneficial to human health.