2. The principle of step by step, whether it is strength, speed or movement difficulty, should be step by step in the training process. Only in the state of low difficulty, low load and low speed can we be foolproof, and then try faster, heavier and more difficult training.
3, the principle of repetition, the human body is undergoing metabolism all the time, muscles, ligaments, bones, blood circulation, nerve conduction, energy supply and other systems are an organic and constantly changing whole. As long as we relax a little, our bodies will be like an idling car. If you rest for a long time, your body will be like a car. Not only will the engine accumulate carbon, but even the gearbox, heat dissipation, brakes, air conditioning and other systems will fail due to lack of exercise.
Extended data:
Precautions for sports:
1, diet, some people think that eating more meat before exercise is good for strengthening physical strength. Actually, this is a misunderstanding. After eating a lot of meat (especially pork and beef) before exercise, it is not only difficult for the body to digest and absorb, but also makes the gastrointestinal burden increase during exercise, thus causing abdominal pain. It is not advisable to eat gas-producing foods such as leeks, potatoes and beans before exercise, because they will expand the intestines and lead to abdominal pain during exercise.
2, equipment, wear comfortable, moderate thickness sportswear and shoes and socks when exercising. Choose sports shoes with proper size, soft uppers, non-slip soles and shock absorption. Wear running shoes and cool and dry clothes when necessary. At the same time, we should pay attention to the weather changes to avoid catching a cold or heatstroke.
3, the environment, after arriving at the sports ground, we must first confirm whether the venue equipment conforms to the rules of various sports, and check whether there are cracks, unevenness, looseness, rust and other phenomena on the sports equipment.
4, drinking water, exercise to ensure adequate drinking water to supplement the water lost during exercise. Because sweating a lot during exercise will consume water in the body and affect the output ability of the heart. So drink some water 65438+ 0-2 hours before and during exercise, but don't drink too much water during exercise, and drink water in a planned way after exercise. Don't wait until you are thirsty to drink water.
5, warm-up, do some warm-up exercises before exercise, because proper gradual warm-up can effectively prevent injuries. General warm-up exercises include walking, jogging or doing snail-slow regular exercise. Special warm-up exercises are generally based on stretching and sports related to major sports.
References:
People's Daily graphic news: People's sports teach you scientific fitness.