How do you choose masks?

The hazy days in recent days have caused netizens to create: "The dog is not a dog, and the dog leash is in his hand, but the dog is not seen. The dog called me to go." The new 16-character Jiangsu spirit was born: Houde Zaiwu, self-improvement Do not suck, work hard, and create ash yellow again." The continuous haze has brought great inconvenience to our lives and has also seriously affected our physical health. Everyone wears a mask when they go out. Then do you know how to choose a mask?

First, gauze and disposable masks, can not stop PM2.5

Gauze and disposable masks are mainly for PM3 or more inhalable particles. They have little effect on PM5 or less inhalable particles and have poor blocking effect.

Second, the closer the mask, the better?

In theory, the more the protective material of the mask is closed, the better the effect of blocking the particles. However, the more difficult it is to breathe, the poor wear can cause dizziness due to lack of oxygen. Wearing a professional-grade protective mask like the N95 is likely to cause difficulty in breathing, and care should be taken when wearing patients with cardiovascular diseases. ”

Third, wear masks are exquisite, cleaning is very important In addition to the correct choice, masks are also particular about the way to wear. When people use masks, no matter what type of masks, they should be cleaned and disinfected every day. When cleaning masks, they should be put in boiling water for a few minutes, cleaned and then brought to the sun to dry, so as to play a role in sterilization. . Should also pay attention to health during daily use, after wearing the mask should be put into a clean bag, do not turn over when you wear four, masks should not be long-term wear?

The cold air sucked by the nose is close to body temperature when it enters the lungs. This physiological function of the human body is born, and can be enhanced through exercise, so that people's hardiness is significantly improved. Wearing a mask for a long period of time will prevent this physiological function from being exercised. Over time, the nasal mucous membranes will have a reduced ability to resist themselves, and it will be easy to catch a cold if you catch cold.