In order to keep healthy, we should pay attention to our physical and mental health. Physically, we should pay attention to a balanced diet, diversified food, eat more nutritious and healthy fruits and vegetables, refuse junk food, and pay attention to exercise, go to bed early and get up early, and refuse to smoke and drink. Psychologically, we should keep a relaxed attitude, don't be nervous, don't give ourselves mental pressure, and keep an open-minded attitude towards life. Doing these well can achieve the purpose of health preservation.