Maintaining healthy qi means maintaining essence, qi and spirit. Judging from the characteristics of human physiological functions, the fundamental thing to maintain essence, qi and spirit lies in protecting spleen and kidney. "Spleen is the foundation of the day after tomorrow" said: "Therefore, a good doctor must be responsible for its foundation, which is divided into congenital and acquired. Congenital origin lies in the kidney, which should be the water in the north, and water is the source of heaven. The foundation of the day after tomorrow lies in the spleen, which should be the soil of the palace and the soil is the mother of all things. " Physiologically, the relationship between spleen and kidney is very close, and the husband gets it later, and the day after tomorrow is full of nature. A healthy temper must rely on the warmth of kidney yang; The filling of kidney essence depends on the subtle nourishment of Shui Gu produced by the spleen. In order to maintain the coordination and unity of human physiological functions, it is very important to maintain the spleen and kidney.

(1) Protecting essence and kidney

The essence of kidney dominates the whole process of human life activities. "Book-editing Kidney Theory" says: "People have kidneys, like trees have roots", which clearly points out the importance of kidney essence to health and longevity. Strengthening the body resistance and consolidating the foundation starts from the kidney. For this reason, the ancients repeatedly stressed that the rise and fall of kidney essence is directly related to the speed of human aging. Therefore, health experts in past dynasties have regarded preserving sperm and protecting kidneys as the basic measures to resist aging. Modern medical research believes that kidney is closely related to hypothalamus, pituitary gland, adrenal cortex, thyroid gland, gonad, autonomic nervous system and immune system. Kidney deficiency can lead to disorder of functional elements in these aspects, and can also cause changes in genetic devices, thus widely affecting various functions of the body, which are manifested as pathological changes and premature aging. A large number of clinical data reports show that excessive sexual desire and excessive loss of seminal blood will cause physical weakness, various diseases, premature aging or premature death. It can be seen that paying attention to the care of "kidney" is of positive significance for preventing diseases, prolonging life and resisting aging. As for the methods of nourishing kidney and essence, we should start from many aspects, such as abstinence and essence, exercise and health care, kidney guidance and kidney tonifying, massage and kidney nourishing, diet therapy and drug conditioning. By regulating kidney qi and kidney essence, the balance of yin and yang of other viscera can be coordinated. The kidney is full of vitality, which is beneficial to the operation of vitality, enhances the adaptability and adjustment ability of the body, and better adapts to nature.

(2) regulating the spleen and stomach

Spleen and stomach are the "acquired foundation" and the "source of qi and blood biochemistry", so the strength of spleen and stomach is an important factor to determine people's longevity. As "The Complete Book of Pure Moon" said, "rustic qi is the source of all things, and stomach qi is the master of health preservation. A strong stomach is strong and a weak stomach is weak. Live with a stomach and die without one. Therefore, a health practitioner must put the spleen and stomach first. " "Book Compilation, Dirty Qi and Dirty Virtue" says: "Those who nourish the spleen, nourish qi, nourish qi, and preserve health." It can be seen that a healthy spleen and stomach is the basis of human health and longevity.

Spleen and stomach are the sea of water and valley, which can replenish qi and dissolve blood. The material basis of human functional activities, such as Wei Ying, Qi and blood, body fluid and essence. They are all born in the spleen and stomach, which are healthy and vigorous, with sufficient sources of metaplasia and powerful viscera functions. Spleen and stomach are the hinge of qi movement, and the coordination of spleen and stomach can promote and regulate the metabolism of the body and ensure the coordination and balance of life activities. Personal vitality is the foundation of health, and spleen and stomach are the foundation of vitality. Li Dongyuan expounded the idea that "people are based on the spleen and stomach", and put forward the viewpoint that spleen and stomach injury leads to the decline of vitality, and the decline of vitality leads to the loss of life. Therefore, Spleen and Stomach Theory says: "The true qi, also known as primordial qi, is the essence born before the body, and it cannot be nourished without stomach qi." If vitality is not full, healthy qi will be weak. Dongyuan pointed out that "internal injury to the spleen and stomach is full of diseases." It just shows that weakness of the spleen and stomach is the main cause of all diseases, so regulating the spleen and stomach and strengthening the body resistance are also important rules for prevention and health care.

Modern scientific experiments have proved that regulating the spleen and stomach can effectively improve the immune function of the body, regulate the whole body state and prevent aging. From the perspective of treatment, regulating the spleen and stomach has a wide range of applications. In addition to treating digestive system diseases, it can achieve good results in many diseases such as blood circulation system, nervous system, urogenital system, gynecology, five senses and so on. It can be seen that the spleen and stomach are the foundation of life and health, and doctors and health preserving families in past dynasties have attached great importance to the care of the spleen and stomach. The specific methods of regulating the spleen and stomach are extremely colorful, such as diet conditioning, drug conditioning, mental conditioning, acupuncture and massage, qigong conditioning, daily rest and relaxation. , can achieve the purpose of strengthening the spleen and stomach, conditioning the day after tomorrow and prolonging life.

Regulating renin lies in nourishing essence and harmonizing yin and yang; Protecting the spleen and stomach lies in strengthening transportation and replenishing vitality. The two promote each other and complement each other. This is an important way to prevent premature aging. As "Compendium of Materia Medica" said: "Those who are good at keeping in good health will enter, while those who are not good at keeping in good health will leave. People who support the outside world are real. They are eager for quick success, greedy for money and unrestrained, but they don't know that the outside is actually empty inside. Those who nourish well nourish the interior, so that the zang-fu organs are in harmony, and the three jiao's are in their respective positions, and the diet is always appropriate. Therefore, Zhuang Zhou said, "People are awesome and don't know how to quit. If you can always be as scared as people, why does the disease start and how long will the test of life be? Sages are enlightened by form, fools are ignorant by illness, and they are extremely awesome. "The' nourishing the interior' here is to emphasize the nourishment of essence and blood, focusing on the spleen and kidney, which is the main purpose of cultivating and nourishing vital qi.