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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Why does yawning happen?
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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Oct 16, 2023 · Yawning has several triggers, like tiredness, waking up, boredom and stress. It can also be contagious as a way to show empathy.
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The meaning of YAWN is to open wide : gape. How to use yawn in a sentence.
Answer. Yawning might serve a social function (to communicate boredom) and a physiological function (regulation of body state).
Nov 8, 2023 · Yawning may aid in brain thermoregulation by increasing blood flow to the head. The contagiousness of yawning suggests it may be an empathetic ...
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