Mostly they just don't want people to think they're anti maskers.
Kinda wish we were still required to wear masks just cuz I don't have to wear a fake customer service smile when I have a mask.
Well that is a great reason to deprive your body of Oxygen
I never had a bit of a problem breathing when wearing a mask for over a year. Testing with a machine also shows that they don't affect oxygen levels.
Wrong, you are just an idiot that believes everything on TV, machines do show that mask reduce Oxygen levels
Now Stanford researchers confirmed that N95 masks reduce oxygen intake by 5 to 20%. Through their efforts to develope a portable device that uses these electrochemical processes to enrich oxygen from the ambient air, they have confirmed the very real health threat of masks worn by people for hours every day.