Why do we yawn?

mysterious Asked by chichi about 1 year ago, 4 answers.

Why do we yawn when we are hungry or sleepy? What actually happens in our bodies for this to take place?

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Answered by whoopsies222 on Apr 28, 2007, 04:12PM
| 170 answers.

The most popular theory is that we are tired, so our brain needs more oxygen to work. So, we open wide and take in a lot of air so that more will get into our bloodstream and go to the brain. Sometimes, after somebody else yawns we do the same. This is because our minds are unconsciously immitating them. Weird, huh?

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Answered by miya on Apr 28, 2007, 03:02PM
| 328 answers.

well my opion I think that it means our bdies need enrgy . and that it needs it now !lol

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Answered by amblessed on Apr 28, 2007, 03:46PM
| 8698 answers.

Causes are discussed here: http://en.wikipedia.org/wiki/Yawn

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Answered by texaskimmie on May 30, 2007, 01:18PM
| 2188 answers.
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I've never yawned when I was hungry.

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