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This is not a peer-reviewed study. It's a Tom Scott youtube video.

And the sources he gives in the video's description are really bad.

Are we not peers to Tom Scott?

I appreciate Tom as an educator, but he's not particularly an authority on anything.

Only if you watch it on Peertube. The link is explicitly YouTube.

Somewhat unrelated, Tom also did a great video where he was put in a low oxygen environment. Similarish effects, differentish cause.