Physical exercise can promote growth and health. Blood circulation is improved, and bone tissue gets more nutrition. At the same time, exercise has a mechanical stimulation effect on bones, which increases the height of children.

Clear the brain and improve learning efficiency. Physical exercise can increase the blood supply to the brain, improve the supply of blood sugar and oxygen to the brain, promote the metabolism of brain cells and improve the activity ability of cerebral cortex.

Promote personality cultivation and cultivate sentiment. Physical education can help students overcome various physical and psychological obstacles and cultivate their excellent qualities such as courage, determination and hard work.

Extended data:

Proper exercise

1. Badminton is played in indoor courts, so it is not easy to get sunburned. It is an ideal choice for summer sports. Badminton is a sport that can make people clear-headed, agile and exercise the whole body. Playing badminton can not only strengthen the body, lose weight and shape, but also promote metabolism, so that toxins in the body can be excreted with sweat.

2. Swimming has the functions of losing weight, lowering cholesterol and enhancing cardiovascular function. Summer is the best season for swimming, especially for outdoor swimming in hot weather. Because the outdoor air is good, it is beneficial to stimulate the skin and promote the contraction of muscles and blood vessels after water comes out. At the same time, outdoor sunshine is conducive to promoting the absorption of vitamin D by the human body, which is good for the health of the skin.

3. Fast walking is a kind of exercise with a speed between running and walking, especially suitable for middle-aged and elderly people. Walking exercise is moderate, the technical requirements are low, it is not limited by equipment, and the exercise effect is good, which has a good effect on strengthening leg muscles and improving cardiopulmonary function. It is not advisable to be too full before walking. Half-full to 60% full is the best state for running.

Baidu encyclopedia-primary and secondary school physical education