On our planet there is no person who never coughed or sneezed. Probably, every person experienced unpleasant feelings when, during a conversation or, for example, laughter during a meal, the food got into the respiratory tract or, as it is called, "in the wrong throat". The person immediately begins to clear his throat. Approximately the same situation with the nasal cavity - we should breathe in some dust particles, as we immediately begin to sneeze, and sometimes more than once! Of course, such situations can not be called comfortable, but one should not think about their uselessness. The thing is that coughing and sneezing are very useful protective functions of our body, without which we would have had a hard time. So let's figure out what's the matter, why people sneeze and cough.
Why do people cough?
A deep short breath, followed by a rather sharp jerky exhalation through the mouth - that's how you can describe our cough. This is the protective function of our body: when you cough from your mouth, for example, unwanted crumbs of bread may fly out, which, as people say, "fall into the wrong throat". When we get sick, we hate our cough, but in vain ... Here, too, he helps us! Only in this case he "throws" out of our upper respiratory tract not food, but the mucus accumulating there. Do not forget that a strong cough is an indicator of the unsatisfactory condition of our bronchi or respiratory throat. When the disease recedes, the mucus, for obvious reasons, ceases to form, accumulate, and therefore cough disappears. We come to the conclusion that the cough is a double-edged sword: on the one hand, it is a serious signal about the undermined health, and on the other hand - an assistant in recovery.
Why do people sneeze ?
Sneezing is also a protective function of the body, relieving our nasal passages from mucus and various dust particles. In general terms, this happens at the expense of hairs, which completely cover the nasal passage, preventing dust and other unwanted mucks from entering the lungs. But what are the reasons why people sneeze? The reasons causing this protective reflex are full, some of them can be individual for this or that person. For example, sometimes we sneeze from dust or sharp smells, irritating the olfactory receptors of the nose. It is they who begin to tickle in the nose before the very sneez: the foreign body that gets into the nose starts to irritate the nerve receptors, the signal enters the brain, which in turn sends a "command" to sneeze. The whole operation takes no more than a fraction of a second! Another reason why a person often sneezes is a very bright light. It can be both a bright light bulb and sunrays.
Why people sneeze in the sun
For certain on the question "why people sneeze in bright light" - so far no one can answer. There are several explanations for this, one of which says that in the "center of events" is the optic nerve and the mucous membrane of the nose, directly related to the nerves. When we look at the bright light, the impulse from the irritation of the pupil is transmitted through the brain to the nerves of the nasal mucosa - there is a sneeze. According to another theory, our pupils are forced to sharply contract in the sun, which leads to increased production of lacrimal glands. Tears, in turn, getting into the nose, irritate his mucous membrane, and again we sneeze.
Be that as it may, know that both coughing and sneezing are only good for us. Never interfere with the natural processes of our body, trying to strongly restrain these protective reflexes - sneeze and cough with all your heart! Be healthy!