Yawning

... totally awake and I figure the shaking woke me up. In addition, is an uncontrollable impulse to yawn. Seems sort of like an average normal thing, yawning or stretching that is. My body is new to sleeping on my side and am not supposed to sleep on my back because I'm in my second trimester, so ...

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Heh, nice 2-year leap. I like the facial-muscle-stretching explanation. We sigh when we need more O2, we don't need yawning for that. I also like the social-evolution explanation that it combines intimidation displays and sleep coordination. Now I cant' stop yawning...

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Children under 5 years do not appear to find yawning contagious just like in chimps. Some studies suggest contagious yawning to be a result of empathy and self-awareness, both of which require a sophisticated intellect.

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I don't know the correct reason, my grandma yawning always after ate.

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... to disuade further dumping of crap into our atmosphere. It seems that we have to have our very species survival threatened, in order to give a yawning damn about changing our habits. Robert Kernodle

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