Everything has two sides. Life lies in exercise, and exercise is very important to life. The function of exercise is to dredge blood vessels and meridians, so that nutrients can be supplied to the whole body and meridians can be unblocked. Exercise also varies from person to person. Some people are weak and seriously ill, such as the elderly, patients with liver disease and patients with kidney disease. And taking part in sports activities will consume a lot of vitality and make your body weaker, which is not worth the loss. This kind of person needs a rest. Rest refers to meditation, through mental and physical rest, to adjust emotions, reduce consumption, eliminate fatigue and improve health.

The combination of exercise and rest is health preservation. Young people mainly exercise, while the elderly and infirm mainly rest.

People maintain physical activity through meridians, blood vessels and qi and blood. Moderate exercise should increase the vitality of the body. I have met many old farmers, who are still full of energy in their eighties and still grow crops to feed chickens to do housework. In this community, an 88-year-old secretary of Caishiwan rode his bike to the supermarket to buy lai today. He said that he had been busy all his life. But some old people don't exercise much, just spend a lot of time raising fish and writing, and they are in good health. Therefore, it seems that they should have their own way of keeping in good health.

The life span of plants and people is not comparable at all, and the structure of plants is much simpler than that of people. Medical research on the human body is just the tip of the iceberg. The occurrence and development of many diseases are unknown, and people with "unknown causes of death" abound. Life span is influenced by heredity, life, sports, residence and social environment. Some people live short, others live long, so we can't compare trees with people. Trees are plants, and people are the most advanced animals.

It should be a combination of static and dynamic. There is a limit to everything. Excessive exercise exceeds the limits of the human body, but it damages the body. People sit still and lie down for a day, and the food is blocked in their stomachs. Over time, siltation will form, and the blood in the body will not flow quickly, so it will precipitate in all parts of the body. Over time, there are more and more sediments in the blood, which pile up and form thrombus, and its future troubles are endless. So exercise and rest in moderation.