[CJ Wolf]

in with out wearing a mask. 17% oxygen.

https://twitter.com/MdKnightBabe/status/1275537902009675776

[nclaurel]

Masks apparently violate OSHA. All governors, employers and stores that require them should be sued.

[fred42]

>> “in with out wearing a mask. 17% oxygen.”
https://twitter.com/MdKnightBabe/status/1275537902009675776

I did a test with a Pulse Oximeter
After 5 minutes in mask (medical grade, but not n95), O2 dropped from 99% down to 97%.

So either the tweeted video is either BS or OSHA standards are overly strict...

Be interesting to see the test duplicated.