this post was submitted on 02 Jun 2021
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Why is yawning contagious? Is Contagious Yawning Essential to Survival? (www.thecomprehensivepost.com)
submitted 3 years ago by [email protected] to c/[email protected]
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Yawning is pretty common for humans, and even for other animals, but we still don’t know for sure why we yawn - or why I yawn when I see you yawn. Yawning often happens when we’re feeling sleepy, bored, or otherwise just not very alert. But it’s also contagious.

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