How to use Face Mask, as safeguard for COVID-19?

In my whole life, I just came to know that the string attached in face mask as a sign it must be touching the nose, can be pressed or little twist to enable to close tightly and avoid going down, or even avoid the moist if you are wearing reading glasses.

We can use face mask specially now adays because of the Corona viruses (CoVic-19(

Pls watch ARL's simple health tips that we can do regularly.
PART-1 COVID Issues.

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