The research of Dr. Canneros from the Center for Preventive Medicine of Harvard Medical School in the United States shows that relaxed and pleasant low-energy exercise is beneficial to human health. The function of "light exercise" is various, its main function is to regulate people's physiological function, physical strength, ability and psychology; The display of human personality; Complement of human culture; In the practical experience of sports, the human body can spend its leisure time happily and healthily, thus alleviating the physical and mental fatigue in work and life, eliminating the tension caused by improper load and hard trauma, enabling the exerciser to achieve the goal of self-elimination, live in harmony with the body, and form the internal motivation of good physical and psychological needs. Its function is mainly reflected in the following aspects:

(1) The function of promoting health and fitness. The main reason why "light exercise" can become the new fashion of fitness in the world today is its fitness function. With the improvement of living standards, the acceleration of the pace of life, the deepening of people's work tension and the increase of people's physical and mental fatigue, especially the modern mode of production and social competition, it is easy to cause mental tension and neurasthenia. And "light exercise" makes people get physical and mental liberation, restore their spirits, improve their mood and improve their health with colorful, relaxed and happy forms, lively contents and favorite activities.

(2) the role of disease prevention and rehabilitation. With the continuous improvement of living standards in modern society, the prevalence of environmental pollution, ecological imbalance and civilized diseases is becoming more and more serious. In order to prevent diseases, people try their best to enhance their resistance to diseases and their adaptability to natural changes. "Light exercise" is the return of life form to nature, which makes people close to nature. Through the action of natural forces (sunlight, air, water, etc.). ), enhance the body's resistance and adaptability, and achieve the purpose of treatment and rehabilitation. If not, the life itself will have bad changes according to the laws of nature, and the direct manifestation of this change is the occurrence of diseases. Low-energy brisk exercise can also stimulate the immune system in the body, increase the number of NK cells, K cells, T and B lymphocytes, macrophages and other immune cells, enhance functional activity, increase the secretion of antibodies and cytokines, enhance immunity, and enhance the body's ability to resist and prevent diseases.

(3) the function of pleasing the body and mind. Modern medicine reveals the close relationship between human physiology and psychology as a whole, pointing out that physical health is the foundation and premise of mental health, and mental health is the guarantee and motivation of physical health. Moderate physical exercise can release a polypeptide substance-endorphin, which makes people feel happy and calm. "Light exercise" is a means to moderately activate the central nervous system and reach a happy level, so that people can feel comfortable and happy directly after exercise. This effect can be immediate, or it can be felt after many physical loads. "Light exercise" In so many fitness programs, exercisers often pursue an elegant, harmonious, relaxed and happy realm of self-liberation, without seeking victory or defeat, so as to achieve the goal of both strengthening the body and enriching amateur cultural life.