When the Book of Changes is mentioned, many people will think that it is a divination book and has nothing to do with health preservation. In fact, the Book of Changes has a deep relationship with health preservation. Huangdi Neijing is regarded as a classic of China people's health care and treatment, but in fact, it is only a branch of the Book of Changes. Many medical classics, including it, are directly or indirectly developed from the Book of Changes. The ancients said, "I don't know how easy it is, so there is not enough doctors." "Medicine is indispensable, and medicine is indispensable." It can be seen that medicine is easy to communicate. Only by applying the essence of Yijing to the practice of health preservation and diagnosis and treatment can we enjoy life and save the world.

The relationship between man and nature is just like the relationship between fish and water. The birth, aging, illness and death of human beings are like the harvest in spring, summer, autumn and winter storage in nature, so the Book of Changes advocates the concept of "harmony between man and nature". Only when the function of human body is consistent with the change of nature can our life be "the mountain fire never goes out and the spring breeze blows high" year after year.

"Su Wen? It is pointed out in the Golden Chamber that "the five internal organs should have four seasons, and each receives something" and "Yin and Yang are in harmony, and the four seasons are in harmony", which shows that man and nature are a whole. The functional activities of the five zang-organs and the movement of qi and blood are closely related to the changes of seasons. Therefore, throughout the ages, Chinese medicine health care scientists have put "climate? Phenology? Symptoms "as an important topic of health preservation to study.

When the climate changes, the human body will have some special reactions: in spring and summer, the weather turns warmer, and the yang that has been dormant in the human body for a winter begins to germinate in vitro, thus promoting the speed of blood circulation, and a lot of sweat is discharged from the body surface. This is the way for the body to regulate excessive yang in the body by sweating and dissipating heat; On the contrary, in autumn and winter, the temperature is low, and in order to protect the yang, the human body will show more urination, frequent urination and less sweating.

Chinese medicine also believes that staying up late and getting dizzy in the morning will also affect people's lives, so people should follow the law of "work at sunrise and rest at sunset", otherwise the human body will produce many diseases. Therefore, keeping healthy depends on the harmony between man and nature, and special attention should be paid to the following points:

First, conform to the principle of nature. Man and nature are a whole, so man should change with the change of natural environment, which corresponds to the natural law of long spring, long summer, autumn harvest and winter storage. By observing the movements and positions of the sun, the moon and the stars, obeying the ups and downs of yin and yang, we can recuperate our bodies according to the natural climate changes of heaven and earth, and we can go to the old to welcome the new and save our strength. Only when our body and mind are in harmony with the changes of Yin and Yang and adapt to the climate changes of the four seasons can we make our bodies strong, get rid of diseases, prolong life and live happily between heaven and earth.

Second, it conforms to the principle of human biological clock. There are more than 60 kinds of chemical elements in human blood, which completely conforms to the distribution law of element content in the crust. This can also explain why the body's biological clock is consistent with the changes in nature. If you want to be healthy, you must "live a regular life, don't act rashly" and "save your strength and don't get sick". Only when everything conforms to the biological clock, adapts to the environment of daily rhythm, monthly rhythm and annual rhythm, and makes daily physiological activities, sitting and lying in harmony with these rhythms, can we have health.

Third, integrate the principle of life and health. While the society is progressing, it also brings some unhealthy factors to mankind. For example, the noise and exhaust pollution caused by the appearance of a large number of vehicles in the city, the environmental pollution caused by room decoration, and the excessively tense fast-paced life will bring people symptoms such as mental anxiety, headache, dizziness, irritability and insomnia. Therefore, health preservation should be carried out in daily life, so as to maintain health by diet, keep away from delicacies, balance staple food and non-staple food, balance acidic food and alkaline food, balance impurities and essence, balance cold and heat, balance dry and wet, balance intake and discharge, and balance mood and appetite.