Preparatory activities can be divided into general preparatory activities and special preparatory activities. The general warm-up activities are mainly some general physical exercises, mainly including running, kicking and bending. General warm-up activities can improve the overall metabolic level and the excitement of cerebral cortex, and reduce the occurrence of sports injuries. The amount and time of warm-up activities depend on the content and amount of physical exercise. Because the amount of exercise in fitness is small, the amount of warm-up activities is also relatively small, and the time should not be too long. Otherwise, you will be very tired if you don't exercise.

The content of basic activities is varied. Generally, there are walking, jogging, stretching, easy dancing and gentle games. However, the initial activities should be related to the sports that have just ended, especially when participating in races such as running, skating and cycling. After reaching the finish line, you must continue to move forward for a certain distance, gradually reduce the speed, and then do leg flexion and extension and breathing to promote the rapid return of blood from lower limbs to the heart and prevent the occurrence of cerebral anemia.

Extended data:

Generally speaking, deep breathing exercise and gentle whole body exercise are the main finishing activities. The amount of finishing activities should not be too large, but should be gradually light and the muscles should be relaxed as much as possible. When you feel that your breathing and heartbeat are relatively stable, other uncomfortable feelings will disappear.

Experts warned that Spring Festival travel rush should warm up as fully as possible. Young people can jog before exercise and exercise their ankles and knees to prepare. The preparation should be between 30 minutes and 40 minutes. Old people should choose walking exercise and then do aerobic exercise.

References:

Baidu Encyclopedia-Preparation Activities