It has been a full year since World Health Organization declared the spread of Covid-19, also known as coronavirus, had become a pandemic. Since then, we had multiple lockdowns, travel bans, product shortage, loss of jobs and more. Millions of people died due to the virus and millions more are still experiencing post-Covid-19 side effects.
Now a year later, we can reflect on the things we did to reduce the spread of Covid-19 and flatten the curve. One of the measures that became normalized worldwide is wearing a mask. At the start of the pandemic, CDC and WHO announced that wearing a mask and washing hands can slow down the spread of Covid-19. Many of us must wear mask on daily basis more than 8 hours per day. But does wearing a mask have any side effects?