Second, the principle of stressing practical results: The principle of stressing practical results means that when choosing exercise content, methods and arranging exercise load, it should be determined according to personal gender, age, occupation, health status, hobbies, requirements, original foundation and living conditions, so as to make physical exercise more targeted and exercise in a scientific way to achieve the best exercise effect.
Third, the principle of safety: any form of physical exercise should pay attention to safety. If the physical exercise arrangement is unreasonable and violates scientific laws, injury accidents may occur. In order to ensure the safety of physical exercise.
Fourth, the principle of step by step: the principle of step by step means that the requirements, contents, methods and amount of physical exercise should be gradually improved according to everyone's actual situation, from easy to complicated, from small to large.
5. Persistence principle: The principle of regularity refers to persisting in long-term, uninterrupted and persistent physical exercise. As we all know, life lies in exercise, and the most important thing in exercise is persistence.
Six, the principle of comprehensiveness: the principle of comprehensiveness refers to the comprehensive and coordinated development of physical form, function, physical quality and psychological quality through physical exercise. In physical exercise, we should pay attention to the diversity of activities and the overall improvement of physical function.
Extended data:
Physical exercise instructions:
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