According to scientific research, there is indeed a clock in the human body, which controls the physiological functions of the human body, such as awakening and sleep, the rise and fall of blood pressure, the temperature, disease and health. This is because the content of various hormones and the activity of biological enzymes in the human body are regularly increasing or decreasing in a day and night, a week, a month or even a year, so that people's physiological activities are like a train running accurately according to their own timetable. The regularity of this physiological activity is called "biological clock" by scientists.

Practice has proved that adapting to the biological clock is one of the key factors on the road to health and longevity. Kant, a German philosopher, was born weak and often fell ill in adolescence, but unexpectedly lived to be 80 years old. Why can he live long? Some people say that Kant's life is measured by the most accurate astronomical clock. He goes to bed at night 10, gets up at 5 in the morning and goes out for a walk at 7. He persisted for decades. Residents of Konigsberg set their clocks according to him. Physiologists believe that Kant's longevity is the result of adapting to the biological clock.

In recent years, scientists have found that the role of the human biological clock is roughly as follows.

First, a good dynamic stereotype can be formed. The cerebral cortex is the highest command and regulation organ of various physiological activities of human body, and its basic activity mode is conditioned reflex. If you engage in various activities regularly for a long time, you can form a benign conditioned reflex. Physiologically, it is called "dynamic stereotype". In view of the view that three meals a day are beneficial to health, Japanese medical professor Kagawa Kyohiro clearly pointed out that the diet suitable for the circadian rhythm of the brain is still a three-meal system. He believes that diet is the "switch" of the human biological clock. Changing time and frequency at will will directly affect the circadian rhythm of the brain, reduce work efficiency and induce diseases. As for work, compared with "lark type" who gets up early and "owl type" who stays up late, the former has much superior changes in heartbeat rhythm and is a healthy lifestyle. The latter may be the bane of various diseases, including cancer. This is because if life is irregular and chaotic, then it is impossible for the nervous system to form a regular dynamic stereotype. This irregular life keeps various organs of the body in a state of constant tension. This is one of the important causes of organ diseases.

Second, mastering the law of disease incidence through biological clock is conducive to taking preventive measures. Research by Dr. Meryl Jules of Swanphos Medical Research Foundation in California shows that the first peak of ischemic heart disease, cancer, bronchitis, emphysema and other diseases is at 6 ~ 10 in the morning, and the second peak of heart disease is at 4 ~ 8 in the afternoon. People with the above diseases should be highly vigilant during these two periods, or take preventive medication.

Thirdly, arranging the time of injection and medication by using the biological clock can not only improve the curative effect, but also reduce the adverse reactions of drugs. For example, patients with heart disease are most likely to get sick at 6 ~ 10 in the morning, so taking angina medicine at 8 am is the most effective. As for physical exercise, arrange it before 4 pm to avoid high incidence of heart disease.

Fourth, use the biological clock for health care. For example, around 8 am, liver toxins are the least, and drinking is the most vulnerable at this time. From 4 pm to 6 pm, the heart rate and pulse can best withstand the changes brought by exercise, so it is the best time for exercise. Because most people sleep from 12 to 2 am, so sleep time should not be later than 10 to ensure the quality of sleep.

How to use biological clock to achieve the purpose of health preservation? Experts put forward the following views: 1. Regular daily life and regular work and rest can make people energetic; Eat regularly and defecate regularly every day. Form a good "dynamic stereotype";

2. Eliminating the interference with the biological clock to maintain the biological clock is to eliminate those factors that interfere with and destroy the normal operation of the biological clock.

For example, when people are angry, their heartbeat and breathing will accelerate, and when they are sad, they will cause decreased secretion of digestive juice and loss of appetite. These have seriously hindered the normal operation of the biological clock, so we should try our best to control the generation of bad emotions.