Can physical exercise improve brain function?
In our daily life, we use our brains to read books, study and conduct scientific research, because the human cerebral cortex has a dedicated center for thinking.
The brain is also an organ, and its activities also require energy and oxygen. According to research, when brain cells work, they need 10-20 times more blood than muscle cells, and the brain’s oxygen consumption accounts for 20% to 25% of the body’s oxygen consumption. If you use your brain for a long time, you will feel tired.
Because the energy material in the brain cells is consumed to a certain level, it will switch from excitement to inhibition to prevent excessive cell loss. This is a kind of self-protection of the human body, which is to tell the human body that the brain should rest.
The most thorough way to rest the brain is sleep, during which the brain nerve cells can further accumulate energy. There is another way for the brain to rest, which is to use the conversion of different jobs to induce mutual induction of excitement and inhibition in the cerebral cortex, thereby eliminating fatigue and improving work efficiency. This is the so-called active rest. Therefore, proper physical activity after mental work is very beneficial.
Physical exercise is mainly muscle activity, which is governed by the cerebral cortex movement center. At the same time, the oxygen and energy materials consumed by muscle exercise are maintained by cardiopulmonary function. In this sense, the work of muscles promotes the functions of various organs in the human body.
When muscles exercise, energy sources in the body are fully mobilized, and blood oxygen and blood sugar are increased to varying degrees. The acceleration of blood circulation not only increases the blood flowing through the muscles but also increases the circulating blood volume of the brain. Therefore, the brain can use the opportunity of human muscle exercise to replenish a large number of energy materials and oxygen to make fatigue disappear as soon as possible.
Although human muscle activity is governed by the cerebral cortex motor center, this center and other centers that manage language, writing, and thinking have a certain range of management. This is called functional positioning in the cerebral cortex, which makes the division of labor between the centers clear. Not only that, but there is also a mutual induction law in the cerebral cortex.
When a certain point of the cortex is exciting, the inhibition that appears around it will deepen as the excitement process is strengthened, which is called negative induction in physiology. Because of this, muscle movement will deepen the central inhibitory process of the cerebral cortex to manage thinking, so that you can get adequate rest.
Through physical exercise, the brain and nervous system can be exercised, and the intensity, balance, flexibility, and endurance of nerve cell work can be improved; nerve cells can obtain a more adequate supply of energy and oxygen, thereby making The brain and nervous system obtain sufficient energy and material guarantee during the stressful work process.
Physical exercise can make the brain’s excitement and inhibition processes alternate reasonably, avoid over-tension of the nervous system, relieve fatigue, make the mind clear, and quick thinking. With the improvement of the function of the nervous system, the control and regulation ability of various organ systems in the organism, especially the movement system, can also be continuously improved and perfected.
Therefore, both young students and intellectuals who are engaged in mental work should actively join the sports and fitness team.
Can physical exercise improve cardiopulmonary function?
The circulatory system of the human body is composed of the heart, blood vessels, and lymphatic vessels. The heart is a powerful organ, blood vessels and lymphatic vessels are transport organs, and lymphatic organs also have defensive functions. Through the activities of the circulatory system, the human body supplies blood to tens of billions of cells throughout the body. The blood continuously transports the oxygen taken by the respiratory system and the rich nutrients taken by the digestive system to various tissues and organ systems of the human body to maintain life. vitality.
If the heart function is not good and the transportation system fails, the metabolism and life activities of the human body will be seriously threatened. Therefore, the heart is the most important organ among the various organs of the human body. The function of the cardiovascular system determines to a large extent a person’s health and physical fitness level.
Regular participation in physical exercises can change the shape and structure of the cardiovascular system and significantly improve the function of the cardiovascular system. According to physiological studies, the heart of an athlete is larger than the heart of an average person, the pulse rate per minute is less than that of an average person at rest, and the stroke output is larger than that of an average person.
Normal people can output about 5 liters of blood per minute when they are quiet, and 20 liters of blood per minute during vigorous exercise, while trained athletes can even output 35 liters of blood per minute. Athletes can adapt to strenuous exercise quickly and recover quickly after exercise.
The impact of the respiratory system on the human body is also crucial. The process of respiration is the process of gas exchange between the human body and the environment, which is to supply the oxygen required for the metabolism of hundreds of billions of cells in the human body, and the potential of the respiratory system to discharge carbon dioxide is also great.
The average person’s pulmonary ventilation volume is about 4,200 ml in one minute at rest, and it can be as high as 120 liters per minute during strenuous exercise. This shows that physical exercise can greatly improve the respiratory function of the human body. Physical exercise can not only greatly improve lung ventilation, but more importantly, it can continuously improve the body’s oxygen supply capacity.
The cardiopulmonary function indexes of elite athletes and ordinary people are listed below for comparison.
The heart rate of elite athletes at rest can be as low as about 40 beats per minute (the average person is about 70 beats).
The stroke volume is 90 ml (generally less than 70 ml),
Myocardial hypertrophy is powerful, and the maximum cardiac output can reach 30~36 liters/min (the average person can reach up to about 20 liters/min),
The heart volume is more than 1 liter (the average person is about 0.7 liters).
Breathing is slow and deep, 8~12 times per minute at rest, the absolute value of maximum oxygen uptake reaches 55~7 liters/min or more (3~4 liters/min for ordinary people), calculated per kilogram of body weight, it can reach 85 ml/min. Minutes or more (average people are about 50ml/min).
Why can exercise improve human digestive function?
Human health is often affected by the function of the digestive system to a large extent. Most frail mental workers generally suffer from digestive diseases at the same time.
The main reasons are:
On the one hand, due to the low energy consumption of physical activity, the function of the digestive system is reduced,
On the other hand, because mental work has a significant inhibitory effect on the normal function of the digestive system, if things go on like this, if you do not try to adjust the treatment, your digestion and absorption function will decline, dysfunction, the body will not only not get the necessary nutrition, but will also suffer from stomach problems. , Indigestion and other diseases.
(1) Appropriate exercise can improve the function of the human digestive system. The main mechanism is that the human body consumes more energy during exercise and requires more nutritional supplements. In order to meet the needs of ingesting large amounts of nutrients, the digestive system must be fully mobilized. Therefore, after exercise, most people show the characteristics of increased appetite and increased appetite.
(2) Regular participation in physical exercises can increase the strength of the diaphragm and abdominal muscles. During exercise, the diastolic and contractile activities of the diaphragm and abdominal muscles have a good massage effect on the intestines and stomach, so that the food in them travels and empties faster, and can prevent the retention of food in the digestive tract.
(3) Research shows that physical exercise also has a significant effect on the treatment of certain digestive system diseases (such as dyspepsia, chronic gastritis, gastric ulcer, constipation, etc.). Proper physical exercise can improve the body’s circulatory function, and the blood circulation of the digestive system will of course be promoted and improved. Smooth blood circulation and enhanced metabolism of the body are beneficial to the recovery of various organs of the human body. This function of exercise is often beyond the reach of drug therapy.
How does exercise affect the skin?
Appropriate physical exercise can improve the function of various organs of the human body, but there is a problem that cannot be ignored, that is, people who regularly participate in sports (especially outdoor sports), if they are not properly cared for, their skin is prone to aging. Therefore, everyone who loves health and wants to have beauty should understand the following general knowledge of sports.
You will sweat a lot during exercise and consume more water than usual. If you do not add water in time, there will not be enough water in your body to meet the needs of skin cells. Drinking plenty of water is conducive to perspiration and detoxification and is conducive to smooth breathing of the skin. It is the most basic method of skincare. The human body needs at least 8 to 10 cups of water a day, and you can bring a bottle of water with you during exercise to replenish water at any time.
Replenish water in time after exercise, but it is best not to drink caffeinated beverages (coffee, tea, and cola drinks) because caffeine has a diuretic effect, but it accelerates the loss of water in the body. After exercise, bathing can not only wash away the accumulated skin Dirt, promote blood circulation, can also regulate the function of sebaceous glands and sweat glands to make the skin smoother. During exercise, the sebaceous glands secrete particularly vigorously. Therefore, after exercise, choose a refreshing bath to keep your pores open.
Sports outdoors, too much ultraviolet radiation will also make the skin aging, in order to prevent excessive contact between the skin and the sun, use sunscreen before exercise. In addition, excessive sweating causes the acidic substances in the sweat to damage the superficial skin and cause the skin to age prematurely. After each exercise, clean your face, apply skincare cream, and then put a little oil-rich skincare product on the corners of your eyes and mouth, and stick to it.
Only long-term persistence can avoid premature aging of the skin. After strenuous exercise, the skin often loses its luster, muscles swell, and joints are sore. This is because the sugar, fat, and protein in the body are decomposed in large quantities, and lactic acid, lactic acid, and lactic acid are produced during the decomposition process. Phosphoric acid and other substances, these acidic substances stimulate human tissues and organs and make people feel sore muscles and joints. At this time, if you simply eat meat, eggs, fish, etc. rich in acidic substances, the body fluids will become more acidic, which is not conducive to the elimination of fatigue.
Therefore, you need to eat vegetables, sweet potatoes, citrus, apples, and other fruits at this time. They can eliminate excess acid in the body, reduce the acidity of urine, increase the solubility of uric acid, and reduce the possibility of acid-forming stones in the bladder. Experts believe that after exercise, you should eat more alkaline foods, such as fruits, vegetables, soy products, etc., in order to ensure the body’s needs and relieve the fatigue caused to the skin after exercise as soon as possible.
What is the relationship between height and exercise?
The height of the human body is mainly determined by the length of the bones distributed longitudinally. Therefore, if you understand the factors that affect the growth of bones, you can also understand that there are many factors that affect the growth of bones. There are two main aspects: one is genetic factors. Members of a nation or family are similar in height. For example, Caucasians are generally taller than yellow people.
In a family, if the parents are taller, the children tend to be taller. These can be said to be congenital factors and generally cannot be changed; the second is environmental factors, mainly including nutrition, endocrine, physical exercise, and so on. This is an acquired factor, and you can change your height through hard work.
The following will focus on the impact of physical exercise on height. The practice has proved that physical exercise can enhance physical fitness and help grow taller. According to some statistics, teenagers who regularly participate in physical exercises are about 4 cm taller than those who do not participate in physical exercises. So, what is the reason that exercise promotes the body to grow taller?
research shows:
After a moderate amount of physical exercise, the growth hormone content in the body increases significantly. As the growth hormone content in the blood increases, it can lead to active metabolism of the epiphyseal cartilage at both ends of the long bones, thereby increasing height. There are also surveys showing that people who have exercised during the day, sleep at night, secrete more growth hormone than people who have not exercised during the day. This is the case for adults and children. Although exercise can make the human body grow taller, you should also be careful when choosing exercise methods. Otherwise, it will have an adverse effect on bone growth.
Generally speaking, exercises that can increase appetite, promote sleep, and give a certain degree of longitudinal pressure to the bones are good for growing taller. For example: running, skipping rope, dancing, playing basketball and volleyball, etc.
When choosing the amount of exercise, you should consider:
Too little exercise (such as jogging, slow swimming, etc.) and too much exercise (such as marathons, long-distance skiing, etc.) will not increase height. The former is not stimulated enough, and the latter is extremely weak due to its body (for example one day A thousand jumps and excessive heavy barbell weightlifting exercises can even hinder the growth of long bones).
To successfully increase height depends on the correct combination of different exercises.
