At present, Tai Ji Chuan's fitness function has been widely recognized in the world. Many years' practice has proved that Tai Ji Chuan is not only a fitness exercise that conforms to the principle of physical exercise, but also an effective means to prevent and treat diseases. For some diseases, practicing Tai Ji Chuan is more effective than taking medicine. At the same time, men and women, old and young, strong and weak, can practice, with wide adaptability. It has been widely used in many hospitals and sanatoriums at home and abroad, and has been listed as an important content of comprehensive treatment. Tai Ji Chuan's fitness function is briefly described as follows according to the human body:

1) Influence on the nervous system All kinds of activities of the human body depend on the regulation of the excitation and inhibition of neurons in the cerebral cortex, and the change, coordination and balance of actions are commanded by the central nervous system. When playing Tai Ji Chuan, it is required to concentrate, calm down, stay in the abdomen, eliminate all ideological interference, and practice under the control of the nurse. This can effectively keep the balance between the excitation and inhibition of the cerebral cortex at any time, regulate the normal development of the nervous system, and have remarkable curative effect on diseases caused by nervous system disorder, such as cerebral neurasthenia. Therefore, Tai Ji Chuan is often played to constantly adjust the excitement and inhibition of cerebral cortex neurons, promote the metabolism of all parts of the human body, and make practitioners full of qi and blood, refreshed, responsive and happy. In addition, when practicing boxing, because the eyes rotate freely, when standing, the eyes look straight and extend far away, and when practicing for a long time, the eyes move all over the body, so that the optic nerve and oculomotor nerve can be exercised regularly, which has a good effect on protecting, perfecting and restoring vision. The spiral winding of the pusher can push and swing back and forth between attack and defense, which can improve the skin's response ability and improve the sensitive function of touch.

2) Influence on the circulatory system The circulatory system mainly transports oxygen and nutrients to various tissues and cells through the blood flow of the heart and blood vessels, and discharges carbon dioxide and waste gas in time to promote metabolism. When playing Tai Ji Chuan, the activities of muscles and joints in various parts of the human body make the capillaries open and the venous and lymphatic reflux accelerate, thus reducing the burden on the heart. Muscle cells in the whole body have a heavy workload and need more oxygen and nutrients, which requires the circulatory system to increase the transport capacity accordingly to ensure the needs of physical activities and make the heart and blood vessels move. On the other hand, when practicing Tai Ji Chuan, abdominal breathing is adopted. The contraction and relaxation of respiratory diaphragm and abdominal muscle make abdominal pressure change constantly. For example, when the abdominal pressure increases, the veins in the abdominal cavity are under pressure, and blood is input into the right atrium. On the contrary, when the abdominal pressure decreases, blood enters the abdominal cavity. In this way, respiratory exercise improves the function of heart nutrient vessels and promotes blood circulation, thus strengthening the nutritional function of myocardium, improving the nutritional process of the heart and helping to maintain the health of the heart, blood vessels and lymphatic system. At the same time, it has obvious curative effect on diseases caused by heart and blood vessels such as hypertension, coronary heart disease, arrhythmia and myocardial infarction.

3) Effects on the respiratory system Chen Tai Ji Chuan adopted "abdominal breathing", requiring breath to sink (sink into the abdomen), inhale and exhale, open and close, and naturally cooperate with actions, so that the respiratory system gradually becomes deep, long, thin, slow, even and soft, and the abdomen is firm and the chest is wide, that is, the tension generated during exercise is transferred to the abdomen, and the chest becomes loose, relaxed and calm. Increasing vital capacity and improving the ventilation function of the lungs have a good effect. Therefore, people who practice boxing for a long time will have a lower breathing frequency and a larger lung capacity than the average person. They can practice boxing for a long time without panting and breathe naturally.

4) Effect on digestive system Due to the improvement of the regulation process of internal organs by the nervous system, the contraction and relaxation of diaphragm and abdominal muscles can also play a self-massage role on the liver and gastrointestinal tract, so that the intestine, stomach, liver and kidney can exercise properly, promote the blood circulation of the liver, improve the tension, peristalsis, digestion and breathing ability of the gastrointestinal tract, enhance the secretion function of liver glands, and improve the metabolism of substances in the body (especially cholesterol metabolism). Therefore, playing Tai Ji Chuan often can increase appetite and increase appetite. The content of cholesterol in the blood is reduced. Because after boxing, the content of protein in blood increased, and the content of globulin and cholesterol decreased obviously, which has a good effect on preventing arteriosclerosis.

5) Influence on the exercise system The exercise system of the human body consists of muscles, bones and joints. Spiral winding can make muscle groups and fibers in all parts of the body participate in activities. After repeated spiral winding, muscles can be stretched to a degree that ordinary exercise can't achieve. Adhere to long-term exercise and relax one by one to make muscles even, plump, flexible and elastic, and enhance their contractility. Due to the pulling effect of muscle contraction on bones, metabolism is enhanced, blood supply to bones is improved, the morphological structure and performance of bones are well changed, the bones become firm, have certain toughness, improve the bending, bending and torsion performance of bones, are not easy to deform and deform, and can enhance the stability, flexibility and flexibility of joints. At the same time, it also has a good effect on arthritis.

6) Effect on the Meridian System "Chen Taiji Zhuan" combined with the meridian theory of traditional Chinese medicine, the health of human body is closely related to the smoothness of menstruation and qi. When practicing Tai Ji Chuan, it is required to strengthen the foot root, focusing on the four tips. It is required that the movements should be spiral up and down, without plane and straight line, and be round and coherent, so that muscle fibers, ligaments and joints can get detailed movements in uniform and natural repeated rotation activities. In this way, after practicing for a certain period of time, you will feel swollen skin, numb fingers, heavy abdomen, fever of bladder, heavy feet and mysterious head and abdomen sounds. Long-term exercise has a good effect on patients with various chronic diseases, such as neurasthenia, neuralgia, hypertension, coronary heart disease, myocardial infarction, gastroenteritis, lung disease, tracheitis, hepatitis, nephritis, lumbar muscle strain, rheumatoid arthritis, diabetes and nocturnal emission.

2. Self-defense function

Chen Taiji's biography not only has good fitness function, but also has the function of defending against the enemy and self-defense. However, Chen Taiji's biography is unique, spreading for more than 300 years, and still maintains its original characteristics. Chen and Tai Chi Chuan's kung fu skills can reach the whole family, with static braking, handy, and constant response to changes. They can also seize opportunities, give up others, improvise, use flexibly, introduce failures, and hit people with strength. There is a song that pushes hands: "You must be careful when you press and squeeze, it is difficult to invade your whole body with others." Letting people hit me with great strength will affect four or two kilograms. " Tai Chi tuishou can not only check whether the posture is correct, but also be a good way to exercise fighting and attacking skills. Tai Ji Chuan's driving force is not strength but skill. The so-called ability is to conform to nature to restrain nature and achieve "winning the strong with weakness and winning the fast with slowness". The lever fulcrum and the spiral transformation principle of nature have the function of "four or two". Pushers can use this principle to knead all gravity and convert it into strength. With this effort, you can control your weight lightly. At the same time, Tai Ji Chuan's movements use centrifugal force, taking the waist as the central axis, so that all movements are in the inner circle; Although the linear speed of the inner ring is slow, it can still be faster than that of the outer ring. This is the truth that "the descendants get rich, and the ancestors arrive first", and it is also the key to "slow victory".

Practicing Tai Ji Chuan can not only help us to keep fit and defend ourselves, but also help us to better understand the principle of Tai Chi and better apply it in our daily life.

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