Physical exercise is a physical activity process that uses various sports means, combines natural forces (sunshine, air, water) and health care measures to develop the body, improve health, enhance physical fitness and entertain the body and mind. It is the main form of mass sports activities.
It plays an important role in promoting human growth and development, cultivating bodybuilding posture, improving working ability, eliminating fatigue, regulating mood, preventing and treating diseases, prolonging life and even improving the physique of the whole nation.
The principle of physical exercise is the basic action criterion and requirement that must be observed in the process of physical exercise, the various experiences and generalizations accumulated by people on the basis of long-term physical exercise practice, and the reflection of the basic laws of physical exercise activities.
Extended data
Good habit of exercise:
1, know the exercise limit. Marjory Nolan Cohen, a spokesperson for the American Nutrition and Dietetic Association and a registered fitness expert of the American Sports Medicine Association, said: "It is normal for you to feel moderately tired and sore after exercise, but if your joints feel uncomfortable or tired at the end of the day, it is not normal." Severe pain can lead to injury, and healthy exercise habits also include moderation.
2. Arrange rest days. Dr Jennifer Carter, director of the Sports Psychology Department of the Ohio State University Sports Medicine Center, believes that no matter how much you love sports, you should have a thorough rest at least once a week.
3, exercise well, but also eat well. For people with healthy habits, food is fuel, not enemy. Don't control your diet too much in order to keep fit.
4. Exercise arrangement should be natural. People should integrate exercise into their daily life, just like arranging other schedule activities, it also needs some flexibility. It doesn't matter if you miss one or two exercises because you are busy. Take part in other active sports activities (walking, climbing stairs, etc.). ) to make up for it.
Baidu Encyclopedia-Physical Exercise Principles
People's Network-Fitness Knowledge: Eight Good Habits of Exercise