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Watch the video above — and read more here — to find out. Merely thinking about or seeing someone yawn can make you yawn (you’re probably yawning right now). ... While yawning is typically ...
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 muscle stretching, and a rapid expiratory phase with muscle relaxation, which typically lasts a few seconds.
Several comfort behaviours are associated with the beginning of a rest period (e.g. grooming), whereas others are associated with the end of a rest period (e.g. stretching), possibly to prepare the body for escape or
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Yawning often feels involuntary—it’s triggered by the same part of the brain as sneezing, Sullivan says. But the difference is, a yawn can be controlled from “the top down” if you think ...
328 participants were asked to watch a three-minute video of people yawning and to keep track of how many times they yawned. Of the 328 participants, 222 contagiously yawned.
English: Common buzzard yawning while perched on an antenna in the morning, with nictitating membrane visible (deployed asynchronously on left and right eye). Filmed in 10x slow motion (240 frames per second, playback at 24 frames per second) using a Fujifilm XT-4 and an inexpensive 500mm lens.
Merely thinking about or seeing someone yawning can make you yawn. But why?