Is Contagious Yawning Essential to Survival?

Why is yawning contagious? It might be your body trying to keep on the lookout for snakes.

Hosted by: Rose Bear Don't Walk

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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