A yawn is an involuntary reflex where the mouth is opened wide, and the lungs take in a lot of air. The air is then exhaled slowly. During a yawn, the ...
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Feb 8, 2019 · Excessive, or frequent, yawning can arise from fatigue, anxiety, or an underlying health condition. In this article, we look at the causes ...
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Feb 2, 2023 · Yawning is involuntarily opening the mouth and taking a long, deep breath of air. This is most often done when you are tired or sleepy.
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The closer one is to the person who yawns, the more likely one is to yawn as well. Yawing clearly is associated with sleepiness and boredom. However, almost ...
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Here we review the comparative research supporting this model of yawning among homeotherms, while highlighting a recent report showing how the expression of ...
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