Practice with light resistance and light load first, and then practice with high resistance and heavy load. The following is an example of a combination. (1). Scientific principle: The designed exercises and methods have clear exercise purposes and theoretical basis, and conform to the basic laws of human movement;

(2) Practical principle: The designed movements and paths make people feel easy to learn when exercising, and the exercise is effective by drawing inferences from others.

Exercise;

(3). Interesting principle: The designed movements and methods not only have the effect of exercising, but also have fun and diversity, so that the masses can

Exercise in a relaxed, pleasant and interesting way;

(4) Safety principle: The designed movements, methods and exercise loads conform to the physiological and psychological characteristics of different exercisers, thus

Avoid injury accidents caused by unrealistic exercise or beyond physical fitness;

(5) Difference principle: there are differences in age, gender, physical strength and physical condition among exercisers, so these actual situations are fully considered in the design of exercise movements and paths;

(6) Principle of comprehensiveness: The designed movements and paths make all parts of the exerciser's body get coordinated exercise, so that all physical qualities of the exerciser can be developed.