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Why Do We Yawn?

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 Biology   |   Psychology   |   Science
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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 place?

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SOURCES:
https://ac.els-cdn.com/S0031938414001784/1-s2.0-S0031938414001784-main.pdf?_tid=1cd83f38-ce4e-43e4-8d7a-cea81c8186fe&acdnat=1528070749_dc3a3c4a536d2ff4aa76c8fe8748dacd
http://www.bbc.com/news/health-26587535
https://www.frontiersin.org/articles/10.3389/fnevo.2011.00003/full
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0091773
https://www.newyorker.com/science/maria-konnikova/the-surprising-science-of-yawning
https://science.howstuffworks.com/life/inside-the-mind/human-brain/question572.htm
https://www.smithsonianmag.com/science-nature/why-do-we-yawn-and-why-is-it-contagious-3749674/

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  • RainWalker87 Added anyone in 2018 snatching this???






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