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OK if yawning is from lack of oxygen, do people that are on oxygen full time never yawn??

2007-12-08 17:43:11 · 1 answers · asked by zgreasemonkeyd 2 in Health ➔ Other - Health

1 answers

Both wikipedia and howstuffworks have articles rejecting the lack of oxygen/excess carbon dioxide theory about yawning.

2007-12-08 18:34:07 · answer #1 · answered by hamrrfan 7 · 0⤊ 0⤋

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