Why do we yawn ??????
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One is that when we are bored or tired, we just don't breathe as deeply as we usually 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.
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HEÝ friend here is ur answer...One is that when we become bored or tired,we just don't breath usually as we do.As this theory goes,our body takes in less oxygen because our breathing has slowed.Therefore,yawning helps us to bring more oxygen in blood and remove more carbon dioxide of the blood.Hope helps ù☺!!
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