1, a balanced diet, adequate nutrition: a balanced and comprehensive diet, each meal should contain more food such as protein, vitamins, inorganic salts and fatty acids, which are the basic nutrients to build the body’s immunity. Eat less overly fine foods, as fine foods are often lacking in many nutrients. Long-term dietary imbalances, such as lack of calcium, zinc, iron, vitamin A, vitamin D, etc., can lead to malnutrition and decreased resistance. Not too full. 2, to carry out appropriate exercise: persistent physical exercise, can significantly enhance the body’s immune function. People in physical exercise, the muscles and bones of the whole body to get exercise, the body’s various organs to strengthen the activity, metabolism, blood circulation accelerated, the hematopoietic function of the bones to strengthen the immune system to enhance the vitality. At the same time, physical exercise can also channel psychological tension, reduce psychological stress, eliminate mental fatigue, and stabilize emotions. However, exercise must be scientific, moderate, excessive exercise will put the body in a state of excessive fatigue, the negative impact on human resistance, the doctor recommended 3 to 5 times a week, each time more than 30 minutes, the intensity of not too fatigue prevail. Keep your mood relaxed, if you are in a state of long-term psychological tension, it will have a negative impact on your body. Sunlight is a big step to enhance immunity. 3, to ensure good sleep, regular life, and good health habits: sleep can prevent excessive consumption of nerve cells in the brain and cause functional failure, help the recovery of mental and physical strength and energy storage. Medical research has confirmed that sleep can also improve the body’s immune function, enhance the ability to resist disease, which is conducive to disease improvement and recovery. However, do not stick to the 8 hours of sleep per day rule, “good sleep” is not measured by time, but by quality. If you feel energetic and happy when you wake up every morning, it means you have slept well. To improve the quality of sleep, you must create a good sleep environment, such as reducing noise interference, maintaining a suitable indoor temperature, and avoiding bright light exposure. 4. Vaccination in a standardized way