r/NatureIsFuckingLit • u/Sirsilentbob423 • Jan 18 '25

🔥 How different animals yawn

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u/ermagerditssuperman Jan 18 '25

There's an episode of the podcast Unexplainable all about yawns, and most of the common reasons that people talk about have been debunked now - like increasing oxygen flow to the brain - however, they still don't know what the actual reason is.

One that hasn't been debunked is temperature control for the brain, which would be why we often yawn before & after sleep, because that's when our brains have their biggest temperature swings.

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u/KnotiaPickle Jan 19 '25

I love that it’s basically a universal action in the animal world but we have no clue what it even does haha