Sneezing, yawning, sipping and hiccups - reflexes given by nature. Over time, doctors have been able to explain what role they play in the functioning of the body, reports "News Me". Moreover, it turns out, to restrain them is harmful to health, as the Internet publication for girls and women from 14 to 35 years old Pannochka. Net When too much dust, allergens and microbes accumulate in the nasal cavity, the nerve endings are irritated, and the person sneezes, says Andrei Dyshkovets, Ph.D.. Thus there is a sharp strong exhalation which throws out from a nasopharynx all irritants. Sneezing once a day is the norm. But if a person sneezes all day or several times in a row, this means that there is an allergen nearby, or the nasal mucosa needs to be moistened.

A person can sneeze even from the bright sunlight. It turns out that ultraviolet rays also irritate the olfactory receptors. And this "light sneezing reflex," as it is called by experts, is hereditary.

When you sneeze, a person exhales air at a speed of 160 kilometers per hour. It contains more than 100 thousand bacteria that can breathe in people around. That's why doctors advise you to close your face with a handkerchief when sneezing. You can keep from sneezing by rubbing the bridge of your nose or pinching your nose.

But little is known about yawning, says Roman Buzunov, a doctor of medicine, a member of the European Society for the Study of Sleep Disorders. However, in nature almost all living creatures yawn, even frogs and fish. Kids start yawning in the womb. In turn, yawning is very contagious.

Contrary to popular belief, scientists say, a person yawns not because he is bored, or he wants to sleep. It's all about excitement. During stress, the brain works hard and overheats. In response, the nervous system includes a protective mechanism - a person inhales a large portion of air to cool the brain. For the same reason, we yawn, if it's hot or not enough oxygen.

Doctors believe that it is useful to yawn: the airways are wide open, muscles relax. Yawn helps to relieve stress, fatigue, psychological stress, stimulates the brain. At the same time, mood improves, blood pressure normalizes, which is the prevention of heart disease. And yawning stimulates the lacrimal glands.

Sipping is preparing the body for work. Thus, a person kneads muscles after sleeping and restores blood circulation throughout the body. Sipping stimulates the pleasure centers in the brain, and this improves the mood. And it has a positive effect on vision, taste and tactile sensations.

The older the person becomes, the less he stretches. This is due to the lack of time in the morning, says Roman Buzunov, but if you wake up and immediately get up, you can get a headache and a bad mood.

As for hiccups, it is caused by the vagus nerve, which connects the esophagus, diaphragm and nervous system. If a person quickly eats, swallows large pieces, overeats, it irritates the vagus nerve. It strains and stimulates the diaphragm. And she produces sharp air pushes to push the food through the esophagus.

According to the therapist Irina Melitseva, frequent and prolonged hiccough may be a sign of a number of serious diseases, for example, intestinal obstruction, heart attack, increased intracranial pressure, esophagus, lung and neck tumors. Sometimes hiccups are a symptom of nervous disorders. There is a known case when residents of the Arkhangelsk region have been hammering for several months, "infected" from each other.

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