1, keep the normal tension of the whole body muscles.

The normal muscle tension of human body is often in a state of slight contraction. In this state, although the muscles are working, the consumption is minimal and the amount of oxygen needed is very small, so it is not easy to produce fatigue. Normal muscle tension can not only promote the metabolism of whole body tissues and cells, but also promote blood circulation. With good blood circulation, oxygen, nutrients, hormones and other chemicals can effectively supply tissues and cells, take away various products and excretions of tissues and cells, and keep tissues and cells in the human body active all the time.

2. It is beneficial to the function of cardiovascular system.

Although the heart is the main organ to maintain blood circulation in the whole body, it is not the only functional organ. In addition to the above muscle tension, the elasticity of aorta, the activity of peripheral vein and its valves, and the diaphragm between chest and abdomen also participate in the function of pumping out and recovering blood like a water pump. In this way, the blood in the peripheral veins, especially in the veins of the two lower limbs, will not stagnate and coagulate, causing phlebitis or more serious venous blood.

3. Have a good influence on the spirit

Regular moderate physical exercise (defined as the amount of physical exercise between mild and intense, which can cause fatigue) can cause mild fatigue. This can relieve tension, anxiety or excessive concentration; In this way, people can quickly calm down to rest or take a nap.