Sneezing is a protective reaction of the body and occurs when the receptors located on the mucous membranes of the nasal cavities are irritated. So, when dust accumulates in the nasal cavity, the mucous membrane dries up, the nerve endings are irritated and a “sneeze” occurs. A sharp exhalation through the nasopharynx from the lungs helps to “expel” all unnecessary from the nose, so that this debris – microbes, foreign bodies, allergens, dust and excess mucus, does not pass into the nasopharynx and further. It is considered normal to sneeze two to three times in a row. But if every morning begins with a sneeze, this is a cause for alarm. Perhaps there is an allergen nearby, or you have chronic rhinitis, or you need to moisturize the nasal mucosa. The reasons may vary.
There are people who sneeze with certain manipulations. For example, when plucking eyebrows. This phenomenon is explained by the fact that in this place there are nerve endings that provoke sneezing. Many sneeze when exposed to bright light. Why is this happening? People have asked this question since time immemorial. The tendency of a person to sneeze at the sight of bright light was noted by the ancient Greek scientist Aristotle. Modern scientists explain this by the fact that ultraviolet rays of sunlight irritate the olfactory receptors. By the way, it is known that sneezing into the light is hereditary.
In any case, whatever the reason for your sneezing, remember to cover your nose with a handkerchief. First, so as not to infect others. When sneezing from the nose at a speed of 160 km / h, more than a hundred thousand bacteria fly out, which can be inhaled by the people around. Secondly, etiquette requires it. What to do if the urge to sneeze at the most inopportune moment? You can stop sneezing. Rub the bridge of your nose vigorously or pinch the tip of your nose. Use these measures only when absolutely necessary. You should not restrain this natural activity of the body, since then the microbes will remain with you.