Mask is supposed to be used for a limited time. If u wear it for a long time:
1. Oxygen in the blood reduces.
2. Oxygen to d brain reduces.
3. U start feeling weak.
4. May lead to death
*My advice*
i. Pull it off wen u are alone.
ii. Do not use it at home.
III. Only use it in a crowded place and wen in close contact with one or more persons.
iv. Reduce d use of it by isolating urself most times.