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Frequent incomplete yawning can also be a sign of stress and/or anxiety, which will make it difficult for muscles in your face and elsewhere in your body to ...
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May 9, 2014 · A new study suggests that you may not really be yawning because it's contagious, or you're bored or tired.
The most scientifically backed theory about why we yawn is brain temperature regulation. Inhaling air can help cool brain temperature down.
Sep 13, 2018 · Thompson [vi] has a theory that yawning is caused by a rise in cortisol levels, which can happen when you're stressed but also when you're tired ...
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Video for ***YAWN***search?q=what happens if you don't yawn
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Posted: Apr 24, 2023
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Dec 31, 2018 · LOL, I know what you mean. I don't think the exact reason we yawn is known but it's involuntary. Theories that it increases O2 or decreases ...
Dec 13, 2023 · Discover the signs that someone is lying, including the way they gesture, the position of their eyes, the amount of detail they provide, ...
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