What is the scientific basis for saying that chewing can exercise vital capacity?

The vital capacity of an adult is about 3000-4000 ml, that of swimmers and long-distance runners can reach 6000 ml, and that of extreme divers can reach 10000 ml after hard training.

People's vital capacity is the largest in the prime of life, and gradually decreases with age, but people who insist on exercising all the year round can still maintain a large vital capacity. Generally speaking, the better the health, the greater the vital capacity, the deeper the breathing and the more complete the lung breathing, which is beneficial to the human body to better realize the gas exchange inside and outside the human body and is beneficial to health. The size of vital capacity is less affected by congenital factors and mainly depends on acquired exercise. Today, I'm going to share two simplest methods of vital capacity exercise.

One. ? Shouting training (shouting)

Choose a four-word idiom, Mona Lisa or Elizabeth. Take a deep breath and repeat the four words at a constant speed until you have no strength and your voice is hoarse. See how many times this tone can be shouted. This method can exhaust lung gas to the maximum extent, purify lung carbon dioxide, promote alveolar contraction, enhance lung elasticity, deepen breathing depth and increase vital capacity.

The average person can shout out 30 times in one breath. Women's vital capacity is small, but their vocal tract is narrow, so they are not worse than men. Tell me about my experience. China Telecom once held an event and shouted "I love Tianyi" in one breath. I can shout out 65,438+000 times in one breath. In the last stage, the host allowed others to take a breath, but it was still not as good as me.

2. Hold your breath training (inhalation)

There are many kinds of breath-holding training, such as sitting still, lying flat, facial immersion and so on. These methods are very suitable and can be carried out at any time. Here, I will focus on meditation. Breath-holding training can train the body's tolerance to high nitrogen and carbon dioxide, strengthen the body's adaptability to anoxic environment, and also promote alveolar expansion and increase vital capacity. Take a few deep breaths first, then sit still and hold your breath, so that the air in your lungs can be fully exchanged with the outside air. Then, inhale quickly through your nose and mouth until you can't inhale. Then, close your airway and record the time. Sitting still and holding your breath goes through three stages.

1.？ Oxygen-enriched period

The lungs are high in oxygen, and it is relatively calm to hold your breath. When holding your breath, close your eyes, keep your brain calm and try to think about happy things together, which can slow down the oxygen consumption. This stage can last 40 -90 seconds.

2.？ Anaerobic period

The oxygen content in the lungs decreased rapidly, the carbon dioxide gas increased, and the body began to feel unwell. At this time, it is necessary to change the breathing state of the lungs in time. Before, the lungs have been exhaling. At this time, they should be forced to continue to inhale. After changing the state, the stomach will contract, the organs will move up and the chest will expand. This transformation has a very important psychological implication, that is, to "cheat" the body and pretend to replenish oxygen to the body, also for a moment's comfort. Pay attention to close the airway, if there is air leakage, you can't hold your breath. This stage changes well and can be increased by 30 -80 seconds.

3.？ Anaerobic period

Oxygen in the lungs is exhausted, and the lungs continue to be under the double pressure of high nitrogen and carbon dioxide. The human body is extremely uncomfortable, the brain is congested and swollen, sweating and even slight hallucinations, the body is twisted, the eyes and ears are tired, and the airway switch is in danger of being washed away. At this time, the lungs can constantly change the state of "breathing" and "inhaling" to relieve discomfort. Every second needs great patience and self-denial, but only in this extreme patience can the vitality and potential of the lungs be stimulated to the maximum extent. At the last minute, you can pinch your nose with your hand, and then insist on 1 second is victory. If you feel that it can't be closed, you must end it in time. If your brain is deprived of oxygen for too long, you may faint.

It is good to hold your breath for 90 seconds at first, but personally, it is still possible for ordinary people to reach 200 seconds through hard work. In yesterday's article about quitting smoking, some netizens questioned that I could hold my breath for 200 seconds. I need to add that 200 seconds was achieved when I was in high school, and it was not the highest record for me to hold my breath. It is no exaggeration to say that I have never met my opponent, whether underwater or on water. After holding your breath every time, take a deep breath and recover for a few minutes. Hold your breath 3-5 times a day. Lung exercise needs long-term persistence and can't wait.