Matter, Energy, and Life of Michaela A. Castello.

Masks and Breathing

Here’s a nice anecdotal follow-up to those mask objections I wrote about. Remember, even if it did demonstrate that a mask “cut oxygen levels,” that is not the same order of magnitude of problem as spreading a disease like COVID-19.

Doctor Runs 22 Miles Wearing Face Mask to Show it Doesn’t Cut Oxygen Levels.

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