Physical education class's homework: 1. How do you understand health? What are the benefits of fitness? explain

Health means that a person is in good condition in physical, psychological and social adaptation. Health is a dynamic balance, a balance between various organs in the human body, and a balance between the human body and the external environment (including natural environment and social environment).

The health benefits of sports health;

1, physical exercise is conducive to the growth of human bones and muscles, enhance cardiopulmonary function, improve the functional state of blood circulation system, respiratory system and digestive system, and is conducive to human growth and development, improve disease resistance and enhance the adaptability of the body.

2. Reduce the chances of children suffering from heart disease, hypertension, diabetes and other diseases in adulthood.

3. Physical exercise is one of the most active and effective means to enhance physical fitness.

4. It can reduce the risk of premature aging.

5. Physical exercise can improve the regulation function of nervous system, improve the ability of nervous system to judge complex changes in human activities, and make coordinated, accurate and rapid responses in time; Make the human body adapt to the changes of the internal and external environment and maintain the normal life activities of the human body.

Small knowledge of sports health

1. In human body, the weight of exercise system accounts for about 60% of human body weight.

2, regular exercise, pulling joints, can increase the flexibility of joints. Get strong muscles through exercise. The corresponding connector can be protected from damage.

3. Health is not only physical health, but also mental health and good social adaptability. ? Regular exercise and pulling of joints can increase the flexibility of joints. Get strong muscles through exercise. The corresponding connector can be protected from damage.

At the beginning of strength training, because more muscle fibers contract at the same time, the muscles look more developed and the strength increases. However, at this time, the muscles have not changed qualitatively. Only by perseverance and long-term exercise can muscle fibers become thicker and muscles really develop.