SatW 2021 Calendar
now on sale!
Odds and Ends
8 1, 9:46pm
Try it yourself. Get an oxymeter, measure before and after, especially if you do something physical. Done. Whole thing takes half an hour and will gain you knowledge for life.
Consider also WHY we need oxygen. It is, among other things, for the immune system. Less oxygen, lower immune response, more risk of getting sick - from anything, not just this one specific virus out of thousands.