Yawns are weird. You’re tired? Why don’t you open your mouth really big about it? What’s that? You’re not tired, but you saw someone else open their mouth big? Well, guess what.
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[–] 8 points 11 months ago

A yawn is a signal to regain some alertness, so when you yawn in order to become more awake, it signals your fellow life forms they might want to be alert too. 🥱

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