Contagious yawning refers to the tendency of individuals to yawn after seeing, hearing, or even thinking about someone else yawning. About 40% to 60% of people exhibit contagious yawning when exposed ...
Researchers believe the yawning robot may have triggered some biological mechanism in the chimps that they associated with sleep. Image: Popular Science composite, Getty Images/ RMJM, Aline ...
Yawning isn’t just a deep breath indicating tiredness or boredom, but a process that reorganises the flow of fluids out of the brain, according to MRI scans that also suggest we each yawn in a ...
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