Tag: humans


Why Do We Yawn?
Mysteries, Science & Space add comment

Why Do We Yawn?

People say lack of oxygen, because you’re tired, and some even say it’s contagious. So, what’s up with yawning? Causes of yawning, even if you’re not tired The most scientifically backed theory about why we yawn is brain temperature regulation. A 2014 study published in Physiology & Behaviour looked at the yawning habits of 120…

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