A yawn is a reflex in vertebrate animals characterized by a long inspiratory phase with gradual mouth gaping, followed by a brief climax (or acme) with ...
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The most scientifically backed theory about why we yawn is brain temperature regulation. Inhaling air can help cool brain temperature down.
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Jul 10, 2018 · We yawn a lot when we're tired or warm, and sometimes we even yawn just because we see other people yawning! But why do we yawn in the first ...
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Feb 5, 2022 · Primarily, a yawn is triggered in a low-vigilance state of the brain while transiting between wake and sleep. Both the awaking process and ...
Yawn comes from gionian in Old English, "open the mouth wide." Definitions of yawn. noun. an involuntary intake of breath through a wide open mouth; usually ...
Mar 15, 2024 · Yawning is a common reflex in which you open your jaw wide, take a deep breath, and then quickly breathe out. It lasts about 4-7 seconds and ...
Jul 5, 2022 · Although excessive yawning is usually attributed to being sleepy or bored, it may be a symptom of an underlying medical problem.
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Answer. Yawning might serve a social function (to communicate boredom) and a physiological function (regulation of body state).
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