What are the precautions for the use of face masks?
From the perspective of human physiological structure, the blood circulation of human nasal mucosa is very strong. The passage in the nasal cavity is very tortuous, and the nose hair forms a filtering “barrier”. When air is drawn into the nostrils, the airflow forms a vortex in the tortuous passage. The air flow sucked into the nasal cavity is warmed. Some tests have shown that when cold air at minus 7°C is sucked into the lungs through the nose. The airflow has been heated to 28.8°C, which is very close to the temperature of the human body. If you wear a mask for a long time, the nasal mucosa will become fragile. Lost the original physiological function of the nasal cavity, so it is impossible to wear a mask for a long time.
Masks can only be worn in special environments. For example, in places with a lot of people and poor air circulation. Of course, walking in the wild is to resist wind, sand and cold. If you are active in an environment with air pollution, you need to wear a mask, but the time should not be too long. In addition, during the flu season, you should wear a mask when you go to public places where there may be a large number of pathogens. Wearing a mask is just one of the ways to prevent respiratory infections. The most important thing is to maintain good living habits. When not wearing the mask, fold it and put it in a clean envelope. Fold the side close to the nose and mouth inward. Don’t just stuff it in your pocket or hang it around your neck.
