Exercise can enhance the functions of various systems of the body. Regular and moderate physical exercise is one of the easiest ways to improve and maintain health. It is possible to prevent and control some diseases, such as cardiovascular diseases, diabetes, obesity and osteoporosis. Because moderate physical exercise can increase people's physical strength, relieve tension and lower cholesterol and blood pressure. Exercise can also reduce the risk of some cancers, especially rectal cancer. For children and adolescents, regular physical activities can promote growth and development, increase personal confidence, and enhance self-esteem and sense of accomplishment. The elderly can get the benefits of prolonging life from moderate physical exercise, which can improve their quality of life and improve their self-care ability. Insisting on daily physical activity can improve the flexibility of limbs and prevent and reduce the loss of some personal abilities. Running can exercise heart and lung function, enhance muscle strength, and continuous and effective jogging can also consume energy and reduce fat.
The human body is a unified whole, and the structures and functions of various systems of the human body are different, but they are not isolated but closely coordinated when carrying out various life activities. For example, when we do strenuous exercise, not only the skeletal muscle activity of the whole body is strengthened, but also the breathing is deepened and accelerated, so we can inhale more oxygen and exhale more carbon dioxide; At the same time, the heartbeat is also accelerated with the strengthening, which promotes the blood circulation, delivers more nutrition and oxygen to the bones, and transports more waste. The coordinated activities of various organ systems in the human body fully show that the human body is a unified whole.
The reason why the human body becomes a unified whole is due to the regulation of the nervous system and body fluids, especially the regulation of the nervous system. Body fluid refers to the liquid inside and outside the cells in the human body. The human body consists of several internal organs, tissues and organs. Every zang-fu organ, tissue or organ has its unique physiological function, and these different functions are an integral part of the whole human activity, which determines the unity within the human body. That is to say, all the components of the human body are inseparable in structure, interrelated, supported and restricted in physiology and influenced in pathology. This unity of the human body is achieved by centering on the five zang-organs and cooperating with the six fu-organs, and through the function of the meridian system that "the five zang-organs belong to the five zang-organs and the external collaterals connect the limbs". The five internal organs are five systems representing the whole human body, and all organs of the human body can be included in this system. The human body takes the five internal organs as the center, and connects the six organs, five bodies, five senses, nine orifices, limbs and bones into an organic whole through the meridian system, and completes the unified functional activities of the body through the functions of essence, qi, blood and body fluid.