Yawning is a normal physiological phenomenon. When people are tired, their breathing gradually turns from deep to shallow, which reduces the oxygen content in the blood, leaving important organs such as the brain in a state of relative ischemia and hypoxia. The respiratory center responsible for breathing in the brain will send out a deep breathing signal, which is manifested as yawning, which can appropriately increase oxygen uptake and relieve brain fatigue. . . Tears can't fully explain the change of mood. For example, when foreign objects such as dust fall into our eyes, a lot of tears will be generated to wash away the foreign objects. Tears contain not only a lot of water, but also lysozyme, immunoglobulin, complement system, lactoferrin and β-lysin, which can inhibit the growth of bacteria and keep the eyeball moist. . . These two self-regulating functions, which are controlled by autonomic nerves, can be linked in some people. So it is normal to yawn and shed tears.

Everyone will have this kind of reaction phenomenon, and there are many people who have this kind of phenomenon. Many people think this is not good, but it is actually a normal and beneficial excretion phenomenon. Briefly as follows:

Yawning and tears are often carried out at the same time, and the principle is the same. The main principle is that people living in this environment, no matter how strong they are, are attacked by pathogenic qi to varying degrees. The main reasons are: (1) heredity, (2) inherent pathogens in the body, (3) air, (4) diet and (5) spread of germs. That is, the human body inhales a lot of sick gas every day.

Meditation, in particular, requires natural relaxation of body and mind. At this time, the meridians and qi and blood of the major systems of the whole body will also relax and become more unobstructed. Sick gas will also be metabolized in the body, and it will be comfortable to be discharged from the body. These gases will naturally be discharged along the unobstructed meridians, blood vessels and skin pores, while the mouth, eyes and nose have the most obvious reaction because they are not covered, so there will be yawning, tears and runny nose. Generally speaking, the more serious the illness, the more uncomfortable the body, and the more obvious the reaction will be; Especially in practice, there are more times and more phenomena, which is a good response.

So why do people who are usually healthy and strong also have this phenomenon? No matter who inhales a lot of sick gas every day, they all perform metabolic functions in the body, so it is a long-term and arduous task to expel sick gas, just like eating and sleeping. In addition to the obvious reaction during meditation, there are standing, walking, sitting and lying down. This will also appear when you are calm. This phenomenon is generally a good response.

Tears reaction is a metabolic excretion reaction. Tears can keep the eyeball moist, keep the regularity of the smooth surface of cornea and enhance vision. Tears contain lysozyme, immunoglobulin and so on. Can kill or inhibit bacteria and other microorganisms that fall on the surface of the eyeball. People will produce some unknown toxins when they are sad, and they can also be discharged from tears, which is very beneficial to the human body. Its eye activities and so on should be exercised reasonably, and the pores of the whole body should also be exercised reasonably.

If the above reaction is slight, it is abnormal, mainly because the function of metabolism is inhibited, mainly because the rules of qi and blood circulation and meridian circulation are blocked, which makes it difficult or less for germs and sick gas to be discharged, and sick gas accumulates more and more in the body. Generally, there are two bad phenomena: one is long-term illness; Second, although the body is almost or a little stronger at ordinary times, it is easy to have sudden illness or sudden death, which belongs to this truth.