*****why do we youn??
Anonymous:
Youn means....
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I can't understand your question
do you know about youning
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One is that when we are bored or tired,we just don't breathe as deeply as weusually do. As this theory goes, our bodies take in less oxygen because our breathing has slowed. Therefore, yawning helps us bring more oxygen into the blood and move more carbon dioxide out of the blood.
yes
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