1, comprehensive principle

Different types of sports bring different fitness effects. First of all, the sports categories should be mixed, and it is best to include aerobic exercise, strength training and flexibility training.

2, the principle of accuracy

"False" and "wrong" actions are very harmful to health. Some people give up exercise because of "knee injury caused by running". In fact, as long as the exercise standard and exercise load are reasonable, sports injuries can be avoided. The main causes of sports injury accidents are "fake" posture, no effort and irregular movements.

3, the principle of step by step

According to the body's reaction, the frequency of exercise varies from person to person. But exercise at least three times a week, and it is better to gradually increase it to five times a week to ensure the fitness effect. ?

Extended data:

Post-exercise principle:

1, supplement liquid food after exercise

If juice, porridge, soup, and fruits and vegetables with more water (such as tomatoes, grapes, oranges, watermelons, lettuce, cucumbers). These liquid foods contain a lot of water and vitamins, which help the body to be replenished quickly.

2. Potash-containing foods and vitamins

Potatoes, bananas, oranges, orange juice and raisins are rich in potassium and vitamins B and C, which are helpful to deal with the accumulated metabolites in the human body as soon as possible, so eating foods rich in vitamins B and C can eliminate fatigue.

References:

People's Network-These principles of less exercise are harmful to health.

References:

People's Network-What an athlete must know! Four principles of supplementing nutrition after exercise