Live and let live, comply with the biological clock Chinese medicine believes that people and their natural environment is inseparable from the whole, the human body’s life activities with the annual rhythm, seasonal rhythm, monthly rhythm, day and night rhythms and other natural laws and corresponding physiological changes. Human life activities follow a certain cycle or rhythm. For example, human emotions, physical strength, intelligence, etc. have a certain cycle of changes. The Spiritual Pivot – this God Chapter” emphasizes: “Therefore, the wise man’s health, we must comply with the four seasons and suitable for the cold and heat, and happiness and anger and peace of mind, section of the yin and yang and adjusting the rigid and soft, such as this is the evil not to come, live a long time to see.” That is to tell us that only from the human body’s biological clock to adjust the living, regular life, reasonable arrangements for learning, work, sleep, rest, and develop good living habits. Comply with the four seasons, careful care, in order to enhance health, prolong life. Famous medical doctor Zhang Yinan said: “living and living regularly, to maintain its God, not to make labor, to maintain its essence.” Live regularly, can maintain the spirit, so that the human body is full of energy, vitality. Otherwise, living out of order, wanton behavior, against the birth of music, to wine as pulp, to delusion for the regular, will lead to damage to the internal organs, mental instability, adaptability, physical decline, premature aging or disease. For the old and weak more harmful. “Suwen – on the ancient theory of heavenly truth” said: “living and living without a festival, so half a hundred and decline.” Modern medicine also believes that a regular work and rest can make the cerebral cortex in the body’s regulatory activities to form a rhythmic conditioned reflex system. Pavlov confirmed through a large number of experiments, regular life, can make the human body to establish a variety of timed conditioned reflex, so that the body systems in the best state. For example, regular meals can make the secretion of digestive juices, gastrointestinal smooth muscle peristalsis, etc., can be in the power of the conditioned reflexes to achieve the optimal degree of stereotypes. On the contrary, long-term irregular work and rest, often stay up late, lack of sleep, will lead to immune dysfunction, physical decline. Nowadays, some people live and work irregularly, diet and work without a fixed time, often make the human body biological clock dysfunction, leading to or induced by a variety of diseases, such as insomnia, constipation, ulcer disease, gastrointestinal disease, cardiovascular disease, neurasthenia, cervical spondylosis, or even sudden death, and so on. The older the person, the more fixed rhythm of the biological clock, the worse the compliance, we often see some consciously healthy elderly, travel and tourism exertion sudden myocardial infarction or sudden death; and some frail and sick people, because of the regularity of life, but will have to raise the blessings of the days of life, so as to enjoy the days of life. Therefore, the elderly should be more regular work and rest, as little as possible to change the rhythms of life, to do “live and let live, do not make labor” in order to improve the body’s adaptive capacity, so that the qi and blood smooth, Ying Wei Tongda, the positive qi, thus preventing disease, strengthen the physique, and slow down the aging process.