SciShow: Is Contagious Yawning Essential to Survival?

Teacher or professor: SciShow
Subject: Science
Content of the Lesson: Why is yawning contagious? It might be your body trying to keep on the lookout for snakes. Hosted by: Rose Bear Don't Walk SciShow has a spinoff podcast! It's called SciShow Tangents. Check it out at http://www.scishowtangents.org ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Silas Emrys, Drew Hart, Jeffrey Mckishen, James Knight, Christoph Schwanke, Jacob, Matt Curls, Christopher R Boucher, Eric Jensen, Adam Brainard, Nazara, GrowingViolet, Ash, Laura Sanborn, Sam Lutfi, Piya Shedden, KatieMarie Magnone, charles george, Alex Hackman, Chris Peters, Kevin Bealer, Alisa Sherbow ---------- 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://www.ncbi.nlm.nih.gov/pmc/articles/PMC2780782/ https://link.springer.com/article/10.1007/s10071-020-01462-4 https://www.sciencedirect.com/science/article/abs/pii/S0031938419302665 https://www.nytimes.com/2019/02/22/well/live/why-do-we-yawn.html https://apps.who.int/bloodproducts/snakeantivenoms/database/ IMAGE SOURCES https://www.storyblocks.com/video/stock/two-spinning-fans-inside-a-computer-case-closeup-hagwxnfizjfkzchjx https://www.storyblocks.com/video/stock/black-man-yawning-at-workplace-tired-man-supporting-head-sitting-near-notebook-in-office-male-professional-falling-asleep-at-coworking-space-hfzhkmayhjxa6sfq0 https://www.storyblocks.com/video/stock/python-snake-in-rainforest-fern-tree---diamond-python-rsgevlmalj15z0zke


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