Why Does My Skin Still Think It's a Fur Coat?This ancient reflex is a useless evolutionary echo.

From the show

Oh, god... really?

Discover the pointless reason your body hair stands on end. Goosebumps are an evolutionary leftover from when our ancestors needed to trap heat or appear intimidating. This response, triggered by tiny muscles, is now a biological ghost—a vestigial trait with no real function in modern humans.