1. Diet 1. Do not eat animals and their products that have been diseased; buy chilled poultry from regular channels, and fully cook poultry meat, eggs and milk when consuming them. 2. Separate the cutting boards and knives for raw food and cooked food. Wash your hands between handling raw food and cooked food. 3. Even in areas where an outbreak has occurred, meat can be safely consumed if it is thoroughly cooked and properly handled during the food preparation process. Follow three principles: comprehensive exercise, gradual and persistent. Comprehensive exercise, one refers to as far as possible to make all parts of the body, all systems are exercised; the second refers to as far as possible to broaden the exercise program and form, in order to develop all kinds of physical qualities. Gradual, both refers to the intensity of the exercise should be small to large, on the basis of the body gradually adapt to the increasing requirements; also refers to the learning movement, mastering technology from easy to difficult. Perseverance, refers to the formation of habits, often practice unremittingly, until the end of life. Third, quit smoking and limit alcohol smoking, will lead to an increase in nicotine content in the human blood, easily cause vasospasm, resulting in transient hypoxia of local organs, especially the respiratory tract and visceral organs of the oxygen content is reduced, easily lead to the weakening of the body’s ability to resist disease, as well as alcohol. Advocate to quit smoking and limit alcohol. Fourth, the heart health attention to psychological balance: there is a psychological balance, there is a physiological balance, in order to slow down the aging of the brain and immune system. Learn to self-regulate emotions and respond correctly to various stimuli: positive life events increase immunoglobulin IgA, while on the contrary, students’ immune response indicators such as NK cell activity and lymphocyte proliferation capacity decrease in the face of exam stress. To develop an optimistic, cheerful and tolerant personality: to smile a lot, healthy elderly people over 100 years old have something in common, that is, open-minded, easy-going and kind-hearted, love of work and sports. Learn to vent: if you have joy, you can dance or sing, if you are distressed, don’t keep it in your belly, you can confide in your friends or cry a lot. Good interpersonal relationship: good for immunity enhancement, health and longevity. Studies show that lonely first-year medical students, separated or divorced women have low NK cell activity. Adjustment of interpersonal relationships: In regulating emotions, it is important to control anger, which seriously affects immune function. Cultivate good interaction habits, maintain a good mental outlook, pay attention to manners, pay attention to interaction skills, listen more, appreciate more and be more patient.