1. The health knowledge of middle-aged and elderly people includes reasonable diet, moderate exercise and emotional control.

2. The diet of middle-aged and elderly people is mainly light. Eat more fresh fruits and vegetables, avoid spicy and cold food, and ask for less oil, less salt and less sugar.

3. Exercise is mainly moderate exercise, and you can take slow walking, brisk walking and other sports methods. Those who can bear it can go jogging, playing ball games and cycling. Especially for the elderly with heart disease, strenuous physical activity is not recommended.

4. Middle-aged and elderly people should control their emotions, avoid excessive emotional fluctuations and maintain a good attitude.

In addition, it is suggested that middle-aged and elderly people have regular physical examination to ensure adequate sleep and quit smoking and drinking.