sneezing is a phenomenon in which the nasal mucosa is stimulated, inhales sharply, and then ejects quickly from the nostrils and makes a sound. It is an unconscious instinctive reaction that ordinary people can’t control. Common irritants such as dust, bacteria, pollen, pepper and other irritant foods can obviously cause sneezing. The Huffington Post published some interesting secrets of sneezing.
1. Sneezing speed: 100 miles per hour
sneezing speed is much faster than we think, generally 30 ~ 35 miles per hour. A new study has found that when a person sneezes, 100000 germs are sprayed into the air at a speed of 100 miles per hour.
2. Sneezing sprays germs at a distance beyond imagination
. It is generally believed that sneezing will spread germs within a radius of 5 feet (about 152 cm). But studies have found that some people sneeze and spray germy mucus particles 30 feet away.
3. Sneezing is to “restart” the nose
a new study published in the US Science Daily found that, like computers, the nose sometimes needs to “restart”, and it is sneezing that completes the heavy task of biological restart. Sneezing can remove the “bad particles” inhaled into the nasal cavity and reset the internal environment of the nasal cavity.
4. Strong sunlight can make many people sneeze
according to the American “interesting science network”, in addition to feathers, peppers, colds, influenza and allergies, another common cause of sneezing is light. The study found that about a quarter of people itch their noses and sneeze easily at the sight of sunlight or light. This phenomenon is called “light sneezing reflex”. The specific mechanism is not completely clear. But scientists say that there may be a connection between the information transmitted to the brain by the pupil contraction caused by strong light and the information of sneezing.
5. It is normal to sneeze two or three times in a row
the US “daily health network” reported that sneezing may not completely remove the “bad particles” hidden in the nasal cavity. Sometimes it takes several times in a row to completely discharge these irritants.
6. Automatically close your eyes when sneezing
when sneezing, part of the information received by the brain is to close your eyes. Sneezing and closing your eyes is an unconscious reflex of the human body. However, “sneezing may blow your eyes” is a pure rumor. Scientists analyze and point out that when sneezing, there is great pressure on the lungs, mouth and nose. Not only the respiratory muscles such as diaphragm and intercostal muscles will suddenly contract violently, the neck, face and forehead muscles will be tense, and the orbicularis oculi muscle that controls eye closure will also contract. Therefore, when sneezing, they can’t help closing their eyes. Another explanation is that closing your eyes can reduce external interference and make your thoughts highly concentrated, which is conducive to the completion of sneezing.
7. Not sneezing is harmful to health
the American “interesting science network” reported that not sneezing is harmful to health. Dutch research has found that forced sneezing is equivalent to swallowing a large number of germs. In addition, Dr. Alan wilder, Professor of Otorhinolaryngology at the University of St. Louis School of medicine, said that in a few cases, sneezing may also lead to damage to eye blood vessels, weakening of cerebral blood vessels, rupture of eardrum or diaphragm problems.
8. The urge to sneeze can be calmed
Dr. Wilder said that when you feel numb and crisp in the nasal cavity and seem to want to sneeze, you can use some small skills to calm sneezing, such as rubbing your nose, pressing people or taking a deep breath with your nose.