What are the benefits of physical exercise?
Promote blood circulation and prevent vascular diseases.
Exercise can accelerate breathing, enhance heart rate, increase oxygen content in blood, promote blood circulation, soften arterial blood vessels, make them elastic, and prevent vascular diseases such as arteriosclerosis.
Promote human metabolism and lose weight.
Exercise can accelerate human metabolism, remove excess fat and shape a perfect body. Friends who want to lose weight can exercise more.
Exercise can also relieve constipation and eliminate toxins in the body.
strengthen body physique
After exercise promotes blood circulation, oxygen can be fully supplied to all parts of the body, thus enhancing the functions of various organs. People who exercise regularly seldom catch a cold, just because exercise enhances the function of the human body and can resist the cold virus well.
Improve facial luster
Regular exercise can make facial skin firm, elastic, rosy and shiny. The old lady next door often goes to the square to dance square dance. She is 60 years old, and her face is still very tight, unlike a 60-year-old person.
Improve temperament
People who exercise regularly will have a feeling of mental outlook, and the whole person's figure and state are very good. For example, a dancer, people know at a glance that she is a dancer. Mainly the temperament is there.
Conducive to physical and mental pleasure
Exercise can not only make people healthy, but also make people sunny. When faced with setbacks, there will be a good attitude to face. Therefore, it is very important to exercise more and establish a good attitude.
raise oneself
Exercise can promote the growth of children's height. Some parents who are worried about their children's height may wish to bring their children with them when exercising.
What are the benefits of exercise?
First, improve your body shape
The most basic function of exercise is to change the body shape. Through fitness, you can increase or decrease any part of the body (as long as there is muscle tissue) and effectively change its shape, so as to achieve the effect of beautiful figure, and this process can be controlled, which is often called weight loss and shaping.
Second, exercise is beneficial to the health of the whole body from the inside out.
In order to study the relationship between exercise and health, Soviet scientists have done the following interesting experiments.
A group of 20-30-year-old men who were completely healthy after examination were taken as the experimental group, and it was stipulated that they were not allowed to sit up, stand or do sports for 20 days and nights. Another group of people with the same conditions were selected as the control group and accepted the experiment according to the above provisions. The difference is that the control group is allowed to exercise on special equipment for four times on the basis of keeping lying posture day and night. Three to five days later, everyone in the experimental group reported back muscle pain, loss of appetite and constipation. Twenty days and nights passed, and when they got out of bed, they immediately felt dizzy, their muscles were extremely weak, their pulse accelerated and slowed down abnormally, their arterial pressure was dangerously high, and their heart function dropped by 70%. The tissue in the body is severely deprived of oxygen, and even standing and walking slowly feels muscle pain. This situation lasted for 2-4 days after the experiment. While the control group basically maintained the level of working ability. Too little activity will cause changes in the central nervous system and endocrine system, which will lead to emotional instability, metabolic disorder, muscle atrophy, changes in bone tissue composition, rapid malignant cardiovascular system, gastrointestinal dysfunction and renal insufficiency. It is obvious that physical exercise is good for health.
Third, exercise can prolong life.
On the basis of good health, life expectancy can be extended. The study found that mice who exercised every day lived 25% longer than those who kept still. Rabbits can live for 15 years on average, but rabbits can only live for 4-5 years. Shepherd dogs can live for 27 years, while domestic dogs can only live for 13 years. Elephants can live to be 200 years old in the wild, and elephants caught and fed from childhood can't live to be 100 years old at most. The reason why wild animals live longer than farmed animals is that they often keep frequent exercise. Post office workers and field workers live longer than office workers.
Fourth, exercise can promote the growth of bones and help them grow taller.
Biological growth mainly refers to the physical changes caused by the proliferation of cells and the increase of intercellular substances; Development includes morphological, structural and functional changes of various organs and systems of organisms.
The growth of bones determines the height. It is very important to promote the healthy growth and development of primary and secondary school students' bones through physical exercise.
The growth of height is mainly due to the continuous elongation of long bones of limbs. There is epiphyseal cartilage between the osteoplasty of long bones of limbs and epiphysis (the swollen parts at both ends of long bones). This layer of cartilage constantly becomes hard bone, generating new cartilage. In this way, the bones are constantly elongated, and this growth process is very vigorous in children and adolescents. Generally, the epiphyseal cartilage is completely ossified into an epiphyseal line until the age of 20 ~ 25, when the bone is no longer elongated. In the vigorous period of bone growth, reasonable physical exercise can promote blood circulation, increase the blood supply of bone, and make the bone tissue in the vigorous period of bone formation get more raw materials, thus accelerating the process of bone formation; In the process of participating in various sports activities, it is very beneficial to stimulate the growth of bones. According to the investigation and study, 10- 14-year-old students who often take part in physical exercise are 4-8 cm taller than their peers who don't exercise regularly.
Physical exercise not only contributes to the growth of bones, but also helps bones to become harder and better support and protect the human body. Generally speaking, the compressive capacity of bones is 25 times greater than that of granite and 30 times greater than that of bricks. When a person weighing 70-80 kg stands, the tibia (calf bone) can bear the weight of 1.5-3 tons without breaking. During physical exercise, due to the traction and gravity of muscles, the bony processes of muscles attached to bones increase. The mechanical stimulation of exercise on bones increases, which makes the cellular metabolism of bones more vigorous. In addition, exercise can also accelerate blood circulation and supply nutrients more quickly, thus making bones thicker and the density of the outer layer of bones thicker. The release of cancellous bone adapts to muscle tension and human gravity, and the arrangement of trabecular bone is more reasonable. Over time, the firmness, fracture resistance and torsion resistance of bones have been improved. Outdoor physical exercise, physical contact with the sun, contributes to the production of vitamin D and the absorption of calcium and phosphorus in the body, making the bones harder and able to withstand greater pressure.
Fifth, exercise enhances the comprehensive ability of memory and analysis.
Memory ability depends on the structure and quality of the brain. Brain tissue is very sensitive to the supply of oxygen, which consumes 1/4 of the total oxygen in human body. If you want to strengthen your memory, you must first ensure that your brain gets enough oxygen. It has been made clear that physical exercise can improve the functions of respiratory system and cardiovascular system, thus providing necessary energy and oxygen for brain development. Human memory and intelligence are also related to the integrity and diversity of communication between the central nervous system and the peripheral nervous system of the brain. Regular physical exercise can sharpen vision and hearing, improve the analysis and comprehensive ability of nervous system, speed up the conduction speed of nerve fibers, increase flexibility and improve the memory information of human brain.
Sixth, eliminate brain fatigue and improve study and work efficiency.
Exercise is an active way to rest, because in the process of exercise, the nerve centers related to exercise are excited, and the centers related to cultural learning enter a state of inhibition. With the enhancement of the excitability of the motor center, this inhibition is more in-depth, so that the nerve center related to cultural learning can get a good rest and play a protective role. Physical exercise after study can increase the supply of oxygen and nutrients, and also help to improve the function of the brain.
Some businesses have also seen the business opportunities and made a lot of money by various means, but as a result, many people often try their best in vain, because those measures are palliative and do not fundamentally improve the human body. In fact, the key to health and beauty is in our hands-that is fitness. The benefits that fitness can bring to us:
Seven, exercise enhances cardiopulmonary function.
For example, as far as the heart is concerned, the average person's cardiac output is 60-80 ml when he is quiet, and the athlete's can reach more than 100ml, so the athlete's heart rate is slower and stronger than the average person (the athlete's heart rate is about 50 beats per minute when he is quiet, and the average person is about 70-80 beats). It reflects the high level of heart function and the saving of heat. Seko Toshihiko, a famous Japanese marathon runner, has won the international marathon championship three times in a row. Scientists conducted a comprehensive examination of him and found that his heart capacity and weight ratio ranked first among all Japanese athletes, and his heart wall thickness and heart shape were better than other athletes. His highest heart rate is about 240 beats per minute, and the average person can only reach about 180. Seko seems to have installed a high-power water pump in his light body, which supports the movement of his body with strong horsepower. This reflects the advantage of high efficiency of heart function during strenuous exercise, which is the result of years of persistence in exercise and life.
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