1. Modern research shows the importance of keeping healthy, and proper physical exercise is an effective way to keep healthy, improve the efficiency of work and study and ensure the quality of life. Physical exercise can promote human health from many aspects such as physiology, psychology, social adaptability and creativity. Good physical exercise habits have a good influence on human breathing, cardiovascular, endocrine and nervous system.

2. Proper physical exercise has a good effect on the respiratory system. Research shows that regular physical exercise, especially some stretching exercises to protect the chest, can enhance the strength of respiratory muscles, make the chest bigger, be conducive to the growth and development of lung tissue and lung expansion, increase vital capacity and breathing depth, effectively increase lung ventilation efficiency, greatly improve oxygen utilization capacity, promote and improve respiratory system structure, effectively improve respiratory function, increase the elasticity and permeability of alveoli, and be conducive to gas exchange.

3. Proper exercise is the only way to keep your heart healthy. Regular exercise can slow down the heart rate at rest and during exercise, greatly reduce the working time of the heart, increase the heart function, keep the coronary blood flow unblocked, better supply the nutrients needed by the heart muscle, and reduce the risk of heart disease.

Regular physical exercise can make the heart inject more blood into the blood vessels every time it contracts, thus increasing the cardiac output per stroke. Long-term physical exercise can increase ventricular volume; Physical exercise can increase the elasticity of blood vessel wall, which is very beneficial to human health for a long time and can prevent or alleviate the symptoms of degenerative hypertension. Physical exercise can accelerate the exchange of blood and tissue fluid, accelerate the level of metabolism, and enhance the supply of energy substances and the excretion of metabolic substances; Physical exercise can significantly reduce the content of blood lipids (cholesterol, B protein, triacylglycerol, etc.). ), change the quality of blood lipids, effectively prevent and treat coronary heart disease, hypertension, atherosclerosis and other diseases, but also slow down the pulse and lower blood pressure at rest.

Besides, scientific physical exercise can improve mood and reduce anxiety and depression. Aerobic exercise in fitness exercise can alleviate anxiety and depression, and has therapeutic effect on long-term mild and moderate anxiety and depression. Healthy exercise can also improve immunity, prevent some physiological diseases, maintain the stability of blood sugar, and avoid the occurrence of endocrine system diseases such as diabetes.

Expand resources and keep exercising every day, but it's getting worse and worse. Reason:

1, lack of sleep

People who don't get enough sleep every day have a kind of B cell whose activity is much weaker than those who get enough sleep, and this kind of cell can produce an antigen that can help improve human immune function, which will directly affect people's resistance. Therefore, we must ensure adequate sleep to have good health.

2, a single diet

Some people like to eat something and eat it every day, which seriously affects the diversity of nutrient intake. Although we should control the intake of calories during exercise, we should also ensure the diversity of food, otherwise it will have a great impact on digestion and metabolism.

3. Excessive exercise intensity

4. Low carbohydrate intake

Many people don't eat carbohydrate food such as staple food in order to lose weight, which is actually wrong. Although it is important to control the intake of carbohydrates, you should still eat a certain amount every day. The reason is that sugar converted from carbohydrates is an important energy supply for the immune system. If we don't eat it at all, it will inevitably affect the body's resistance.

Reference source Baidu Encyclopedia-Exercise