The older a person is, the lower his physical function will be. People should learn to take care of themselves. Even when they are old, they should keep strong. A healthy body is more important than anything else. As long as middle-aged and elderly people have healthy bodies, they will have endless wealth. Middle-aged and elderly people should pay attention to the time of health preservation, and don't let the time of health preservation be wasted.

First of all, you must exercise. The best time to exercise is at night. Instead of exercising in the morning as people say. Doing exercise in the morning is not good for your health. At that time, the air quality was very poor, and inhaling too many harmful gases would definitely affect your health. Evening is the best time for exercise. At this time, the temperature is not as cold as in the morning, nor as hot as at noon and afternoon. Middle-aged and elderly people can learn some health qigong, such as Tai Ji Chuan, Baduanjin, etc., which is good for their health, can activate the meridians and strengthen their bones. Even if you don't know these methods, walking is a good way to exercise.

Secondly, middle-aged and elderly people should never be overworked. At this age, they have to do some manual work, which is inevitable for their bodies. In the long run, it is easy to break down from constant overwork.

When sleeping, middle-aged and elderly people must go to bed early and have enough sleep time to keep their bodies in good condition. Early to bed and early to rise is a good habit. Old people must drink a glass of milk half an hour before going to bed. Protein and calcium in milk are essential for middle-aged and elderly people. Drinking milk regularly can avoid the problem of osteoporosis, and can also properly supplement the body's nutrition and have a balanced diet.