Why Goosebumps Happen Without Cold

Why do we get goosebumps… even when we’re not cold? Like—why does your skin suddenly start

to look like a porcupine? Here’s the weird part… goosebumps are actually an ancient survival

feature. Thousands of years ago, when humans were covered in hair,

goosebumps made that hair stand up—so we looked bigger to predators and trapped heat.

Now we barely have hair… but your body still runs the old software. And that’s why music,

fear, and strong emotions can trigger goosebumps too. Follow for more

useless-but-cool facts.