Health
Your eyebrows are tiny sweat gutters
HERE’S THE INTERESTING PART
They aren't just there to help you express sarcastic skepticism. Eyebrows are functionally designed as tiny biological gutters. Their curved shape and angled hair growth perfectly catch stinging forehead sweat and environmental moisture, channeling it down the sides of your face so your vision remains crystal clear while you're running away from predators. Or jogging.
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