Why Do We Yawn?

From the creator

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? ---------- Love SciShow Kids and want to help support it? Become a patron on Patreon: https://www.patreon.com/scishowkids ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow 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/

Published 2018-07-10 · Watch on YouTube ↗
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