Why we exercise?

[Introduction] Why do muscles and fitness exercises are necessary? Are these reasons enough? The benefits of this fitness are the reasons for our persistence. Tianya has always believed that fitness is a lifetime thing, and hopes that fitness will accompany you to the "wasteless and old". As long as you give fitness opportunities, I think you understand this!

(1) Develop muscles and enhance muscle strength

The human organs of movement are composed of muscles, bones, joints and ligaments. The movement of the human body relies on the skeletal muscles to generate muscle tension, which causes the contraction and extension of the muscles, thereby producing various actions. According to the biological world’s natural law of “use advancement and disuse retreat”, the purpose of various action methods in fitness exercises is to have a positive effect on the movement organs and cause positive reactions in various parts, so that the muscle fibers will gradually become stronger and stronger, and the muscle strength will also be improved. Greatly enhanced. Long-term fitness exercises can increase the physiological cross-section of muscles, make muscles full, developed, and strengthen muscles. At the same time, it can promote the metabolism of bones, improve the ability of bones to resist tension, compression, and resistance, and also play a good role in promoting the growth and development of joints and ligaments.

(2) Improve and enhance the functional level of cardiovascular, respiratory and digestive systems

Fitness exercises can increase the myocardium, increase the capacity of the heart, and increase the elasticity of blood vessels, thereby improving the diastolic capacity of the heart and blood vessels, making the heartbeat stronger, increasing the cardiac output, reducing the number of heartbeats to about 60 beats/min, and also improving blood The red blood cells, white blood cells and hemoglobin in the body increase, thereby improving the body's ability to absorb nutrients, metabolism and disease resistance.

Fitness exercises can increase the depth of breathing, increase the amount of gas exchanged during each breath, help the rest of the respiratory muscles, increase the functional reserve of the respiratory system, so as to ensure that the needs of gas exchange during intense exercise are met, and the functional level is improved.

Fitness exercise can also improve the function of the digestive system. Because muscle activity consumes a lot of nutrients and needs to be supplemented in time, and muscle activity can increase gastrointestinal motility and increase digestive juice, so it can improve digestion and absorption.

(3) Improve the functional level of the central nervous system

The central nervous system is composed of the brain and spinal cord. It is responsible for managing and regulating the activities of various organ systems of the human body, ensuring the balance of the internal environment of the human body, and maintaining the balance between the human body and the external environment. Fitness exercises can improve the function of the central nervous system and the body's ability to adapt to internal and external environments, promote the development of intelligence, improve the agility of thinking about problems, and thus improve the functional level of the central nervous system.

(4) Improve body shape and correct deformity

Body shape refers to the proportion of each part of the body, and body shape refers to the shape of the whole body and each part. Fitness exercises can promote changes in certain parts of the human body, make the body shape more balanced, coordinated, symmetrical, and harmonious, and make the human body more natural and beautiful. Choosing a special or appropriate training method can improve and shape a more ideal body shape and posture. It makes men become burly and muscular, and women become plump and beautiful.

Fitness has special rehabilitation and treatment effects for correcting certain deformities or defects of the human body. Whether it is due to congenital or acquired body deformities or defects, such as chicken breasts, breasts, or local muscle atrophy caused by disease, muscle strength decline, etc., you can choose targeted fitness training to achieve a certain therapeutic effect. Due to this role of fitness, certain movements have been used in medical sports, bringing good news to patients.

2. Let's take a look at what is called "there is meat when undressing, but the clothes are thinner". Can you do it

3. When you can't hold it, you might as well say "I'm so tired" to yourself, but never admit "I can't" in your heart!