The human body is a very complex combination of many different systems. It is perfectly designed to monitor things that are dangerous to life and health, help to deal with them without our involvement, when we think that just sneezing or yawning is nothing. important.
The mechanism of yawning has not been fully studied so far, but scientists have somewhat figured it out. One of the main reasons for yawning is because the brain is “overheated” or overloaded. If we work too much, lose sleep or lack of sleep, psychological stress, the body must use this special defense mechanism. Inhaling large amounts of air while yawning, we “cool” the brain through the upper palate, as well as widening the airways, increasing the oxygen supply in the blood, and relaxing the muscles. In general, yawning is very beneficial for our body, so let it be, don’t stop it when you want to yawn.
When we sneeze, the nasal cavity accumulates too many allergens, bacteria, dust … or simply exposed to the taste of pepper. At this time, special nerve endings are stimulated causing sneezing to remove excess substances in the nose and throat.
The speed of the exhaled air during a sneeze reaches 160 km/h, and in an average sneeze can contain more than 100,000 harmful bacteria. Therefore, do not forget to cover your mouth every time you “sneeze” to minimize their ability to spread.
If a person sneezes continuously for a long time, it is possible that close to him has a strong allergen. Find and remove that agent.
3. Stretch your shoulders.
Stretching is also a kind of defense mechanism of the body, although we can have almost complete control and do it at will. However, this process is important for the normal functioning of the body. While stretching, the body prepares for the physical activities that await us during the day, helps to activate muscles after sleep, restores blood circulation, improves mood… Scientists say that this movement also works to improve taste and touch.
Hiccups are a kind of body signal that tells us something is wrong with our digestive system. Of course, there are times when hiccups are not there for any reason, but more often it can also be a sign that we’ve had enough. When you eat too quickly, swallow too much, or when you are full, there is stimulation of the vagus nerve, which is closely related to the stomach and diaphragm. So we need to eat slowly, chew well and know when to stop. There is no one effective way for everyone to cure hiccups. Maybe for some people it’s just a matter of holding their breath for a while, for others to take a few sips of water, but there are cases where it’s just a matter of waiting for it to go away on its own.
5. Seizures .
Maybe you know the feeling when you are lying on the bed dreaming and falling asleep, suddenly startled. This phenomenon is also one of the body’s defense mechanisms and it’s called “myoclonic seizures.” In fact, when you start to fall asleep, your breathing rate drops sharply and your pulse slows down a bit. little, the muscles relax, and in aggregate, this condition is misinterpreted by the brain as a state of death, which is why it sends out a powerful impulse to save its “owner”. It can be said that the brain is trying to revive you by creating an electric shock in the body.Of course, after understanding that you are not actually dead, the brain calms down and allows you to fall asleep. but admittedly it’s good to know that the brain is constantly monitoring our safety.
6. Skin of limbs wrinkled when soaked in water.
This is a common situation when we shower longer than usual. It seems that this phenomenon is also beneficial to our body? According to the researchers, the phenomenon of wrinkled hands and feet does not happen by chance. Our bodies feel faced with high humidity and places with high humidity can often be slippery. So the skin on the tips of our fingers and toes begins to transform to improve its adhesion to the surface.
7. Loss of memory.
Memory loss in some cases is not the result of a hard impact on the head, but a very clever way to protect our fragile psyche from unpleasant memories. . There are many cases in which victims of violence, accidents or natural disasters become completely oblivious of the terrible moments they have experienced. And, on the one hand, our bodies can understand this. Why write in memory images that do not bring joy and comfort to people? It is best to erase all unnecessary emotions from memory forever.
Goosebumps appear on our skin at times when we are cold, or when we are in a strong emotional state such as being too scared and this is also the body’s defense mechanism. First of all, the function of this phenomenon is to reduce heat through the pores of the skin, so that the body stays warm more easily in extreme climates.
The second reason has not been studied to the end, but scientists think it may have roots in the distant past of our prehistoric ancestors. At that time, their body was covered with thick hair. When the small muscles near the hairline are stressed due to some emotional state (usually fear), individual feathers stand up causing the coat to ruffle, thereby making human ancestors appear larger in terms of size. form and become ominous to their predators (this mechanism is commonly found in domestic cats and many other mammals today). Thousands of years have passed, humans “parted” from the fur, but this defense mechanism has been preserved to this day.
In addition to the function of protecting the mucosa when foreign objects enter the eye, tears are also a tool to protect emotions. Scientists believe that in stressful situations, the body creates a very powerful new stimulus to distract the owner from the pain he has just experienced.
When a child suffers a painful fall or laceration, his cerebral cortex drives a variety of bodily functions: breathing, movement, the function of endocrine and exocrine glands. But the outward signs that a person is experiencing physical or emotional pain are tears. Excessive tearing reduces the excitability of the cerebral cortex due to the effects of trauma or cuts. The reason is that when tears fall into the nasal cavity, wetting the mucous membrane, the mucous membrane is where the receptors of the trigeminal nerve and the olfactory nerve transmit signals directly to the brain, distracting from the source. the main stimulus – is pain.
So, when a person cries, it feels less painful. In a special study from the 1980s, scientists found that wounds in animals heal faster if they can shed tears. In animals without lacrimal glands, wounds took longer to heal than usual.