The earliest health records can be found in Huangdi Neijing. Only through the continuous practice and development of future generations can we conform to the four-season health care, five-zang health care, emotional health care, diet health care, dynamic and static health care and so on. The ancient book says, "Eat moderately, live regularly", "Nothing is safe, God is inside, and illness is in constant peace", and "Righteousness exists inside, and evil cannot be done. If evil is combined, its qi will be weak. " It boils down to natural health and regular life.

At all times, people who live a long and healthy life have different ways of keeping in good health, but the regular life is the same. Regular life is also listed as the first cornerstone of health by the World Health Organization. It is the "scheduled timetable" in the human body, that is, the "biological clock" dominates the rhythm of normal operation of life. If people's biological clock works in harmony with the rhythm of nature, they can achieve the goal of "keeping fit in nature in a natural way", which is called biological clock health preservation. In the world, biological clock health care is called the best health care method and the highest level of natural health care.