Physical fitness is physical fitness, that is, the ability of human body to adapt to the environment. Broadly speaking, good health means vitality, health and youth. Physical fitness can be divided into two categories: 1. Health-related physical fitness: refers to the ability of the body to cope with daily work, leisure activities and emergencies. That is what we generally call physical quality. 2. Physical fitness related to competitive sports refers to the ability to increase athletes' performance and performance, which includes explosive power, speed, balance, coordination and agility in addition to the elements of health-related physical fitness. Five basic elements of health-related constitution 1. Cardiopulmonary endurance II. Muscle strength and muscle endurance. Body composition-the percentage of fat and non-fat tissue reflects our individual body fat and fat combination. 4. softness 5. Neuromuscular relaxation-refers to the ability to reduce or eliminate unnecessary muscle tension or contraction caused by mental stress. The principle of sports training is 1. The overload principle increases the amount of exercise that can be handled normally and gives the body enough * * *. 2. Gradually increase the amount of exercise according to the principle of step by step, so that sports training can be carried out safely and effectively. 3. Personality Principle Everyone's physical quality and sports skills have their own uniqueness, and the same approach should never be adopted in training. 4. The training plan of all-around principle must be arranged properly, so that all parts of the body and various physical factors can get development opportunities. 5. Repetition principle The enhancement of body tissues, organs and functions can not be easily obtained through several exercises, but through repeated exercises for a long time. 6. The principle of specificity Before making a sports training plan, you must first understand the unique technical and physical requirements of the sport you want to engage in. 7. The principle of reversibility The improvement of physical and physiological quality obtained from training will gradually retrogress because of stopping practicing, so the physical training plan needs to be persistent. Having good physical fitness can make our life full of vitality and cope with the pressure in life. You can have good ability to deal with emergencies and good physical fitness, so as to have a healthy and beautiful life.
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Constitution classification 1. Speed 2. Agile 3. Coordination 4. Burst 5. Balance 6. Reaction 7. Muscle strength is gradually forgotten by the sports world.