Why Are Yawns Contagious?

Yawning is contagious, but not everyone "catches" a yawn.

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Science Why Are Yawns Contagious? Around 60-70% of people yawn if they see someone yawn in real life, look at a photo of a yawn, or even read something about yawning (like this article). READ NOW READ THESE 5 Words Everyone Hates to Say The Highest Peaks in the United States What Happens When a Volcano Erupts? You are receiving this newsletter because you subscribed to the Today I Learned newsletter. If you wish to unsubscribe, please click here A Dotdash Brand 1500 Broadway, 6th Floor, New York, NY, 10036 © 2020 Dotdash - All rights reserved. Privacy Policy.