In the process of physical exercise, participants must form an internal and positive psychological demand for physical exercise through various ways and means, and produce an internal incentive mechanism and an external behavior mechanism. As the transformation of life object, physical education needs the human body to overcome its own inertia, while compulsory and passive physical exercise can only have a positive impact in the short term and is difficult to last.

Second, the principle of gradual progress.

We should follow certain steps to deepen or improve. On the one hand, physical exercise is similar to learning, and it is an insurmountable process from easy to deep and from easy to difficult. On the other hand, human physiological function has its stage characteristics. In the process of exercise, we should arrange the exercise behavior and load reasonably according to the basic laws of human body and the stage characteristics of physiological function change and development. Through scientific and reasonable arrangement, we should gradually break the original internal balance of human body and gradually realize the process from quantitative change to qualitative change.

Third, the principle of perseverance.

The positive transformation of the human body by physical exercise cannot be realized overnight. Moreover, the human body is bound by the natural law of "use in and waste out", and the existing exercise effect will gradually fade if it is not strengthened and consolidated. No matter from the exercise behavior, exercise consciousness, or the maintenance of fitness effect, we must persist.

Fourth, the principle of comprehensive exercise.

People's composition is not only physical, but also psychological and social; Physiologically speaking, the shape and function of human body and the functions of various organ systems are also an interactive load system. Physical exercise should transform people from all aspects, and the diversity of transformation objects requires the diversity of transformation methods and the comprehensiveness of transformation process.

V. Specific principles

In physical exercise, we must consider the participants' physical foundation, physical function, health level, sports and cultural literacy, environment, etc. according to the comprehensive situation, comprehensively choose exercise methods, arrange exercise content, and establish exercise load, so that physical exercise varies from person to person and adapts to local conditions.

Extended data:

Physical exercise guidance

First, avoid exercising under strong light.

Around noon, the hot sun is in the sky and the temperature is the highest. In addition to swimming, avoid exercise at this time and beware of heatstroke. In summer, the ultraviolet rays in the sun are particularly strong, and human skin can be burned by I ~ II after long-term exposure. Ultraviolet rays can also penetrate the skin and bones, radiate to the meninges and retina, and cause damage to the brain and eyeballs.

Second, avoid too long exercise time.

An exercise time should not be too long, generally 20 ~ 30 minutes is appropriate, so as to avoid excessive sweating and high body temperature, which may cause heatstroke. If you exercise for a long time, you can arrange 1 ~ 2 breaks in between.

Third, avoid drinking plenty of water after exercise.

A lot of exercise and sweating in summer, so drinking a lot of water will increase the burden on the blood circulation system, digestive system, and especially the heart. At the same time, drinking water will make you sweat more and further lose salt, which will cause convulsions, cramps and other symptoms.

Fourth, avoid taking a cold bath immediately after exercise.

Because the heat generated by summer exercise increases rapidly, the capillaries of the skin also expand a lot, helping the body to dissipate heat. Sudden supercooling stimulation will suddenly close the pores that have been opened on the body surface, leading to disorder of internal organs of the body, abnormal temperature regulation of the brain, and even illness.

5. Avoid eating a lot of cold drinks after exercise.

Physical exercise can make a lot of blood rush to muscles and body surface, while the digestive system is in a state of relative anemia. A large number of cold drinks not only reduce the temperature of the stomach, but also dilute the gastric juice, which can cause indigestion and acute gastritis.

6. Avoid drying clothes at body temperature after exercise.

In summer, sweat is secreted more, and clothes are almost soaked. Some young people rely on their physical fitness and are often lazy to change their undershirts, which is easy to cause rheumatism or arthritis.

References:

Baidu Encyclopedia-Physical Exercise Principles Physical Exercise Principles