Here we are. Science. Peer reviewed. Truth.
American Occupational Health and Safety Adminstration clearly states that Oxygen levels for workers beneath 19.5% are UNSAFE.
Oxygen levels for masks wearers generally fall to about 17.5% within SECONDS.
There’s an end on that. And that’s before we get into all the other stuff: what do you breath in etc..
Read it and send it around, everywhere. You don’t care? But they’re injuring kids and grannie etc.. you care about them?
https://pdmj.org/papers/masks_false_safety_and_real_dangers_part1