Without it, there would be no bone health.
Bones and muscles are important parts of the body. Without them, body movement is impossible. On the other hand, their health also depends on physical exercise.
Bones are the supporting framework of our bodies. When the body is not moving, bones should bear the gravity of the earth. When you exercise, you have to bear the tension caused by muscle contraction. The bones of the body must be able to withstand the combined action of gravity, tension and other forces so as not to break.
The greater the various forces acting on bones, the greater the strength of bones is needed, and these forces are also a signal to bones. Strong strength and strong signals tell the body that the strength of ilium must be maintained or increased; The strength is small, the signal is weak, telling the body that the bones don't have to be too strong to bear.
Compared with one arm and two arms, the muscles in the right arm are stronger and the bones are thicker. Because of too little exercise, the bone density of people who stay in bed for a long time decreases; However, people who often engage in physical activities have increased bone density.
Without exercise, you will lose your function.
This is a complicated mechanical system. All kinds of bones, muscles, ligaments and articular cartilage are the basic components of joint formation, and are also the basis of lubricating fluid and blood circulation.
The only purpose of such a complex system is motion. Different joint movements have different directions and amplitudes, and the combination of various joints with full body size provides almost unlimited possibilities for our body movements.
There are no blood vessels in articular cartilage, and the nutrient supply and elimination of metabolites depend entirely on the pressure change in articular cavity during exercise. With the increase of pressure, joint fluid enters articular cartilage; When the pressure is reduced, the fluid in the cartilage flows out, and this joint fluid keeps the metabolism of the cartilage.
The function of joints can only be maintained during exercise, and the joints that cannot move will become stiff, unable to move for a long time or even difficult to recover.
Exercise can enhance the metabolic regulation function of muscles.
Muscle is the power source of human movement. Each group of muscles in the human body contracts and relaxes in coordination, and can complete various actions from simple to complex. Exercise can make muscles strong, and muscles that don't exercise for a long time will shrink.
The energy required for muscle exercise mainly comes from fatty acids and glucose. Part of fat comes from our own reserves, and most of it comes from adipose tissue; Sugar mainly depends on glucose stored in muscle.
Muscle is the largest glucose pool in the body, so it is of great significance for the regulation of blood sugar. Muscle volume is reduced and its function is weakened, which will also affect its ability to regulate blood sugar. Therefore, exercising and enhancing muscle function also helps to improve the ability of regulating blood sugar.
Exercise can reduce the number of skeletal muscles and joints.
Exercise is beneficial to the health of bones, joints and muscles, and may also lead to their injury. Moderate and reasonable exercise is unlikely to happen, and the advantages outweigh the disadvantages; Excessive and unreasonable exercise is easy to happen and may do more harm than good.
Sports injuries occur not only in our daily life, but also in most people's lives. However, the total incidence of injuries among people who regularly participate in sports is low. Their legs and feet are more flexible, their reactions are faster, and they are less likely to get hurt when they stumble.
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