Do you like to hear scary stories? Whether they're about headless horsemen, haunted castles or creepy creatures like vampires or werewolves, scary stories are a treasured part of the childhood experience.
A good scary story will give you a thrill and send chills down your spine. It might also give you goose bumps. Have you ever WONDERed exactly what goose bumps are and why you get them when you're scared?
Goose bumps — sometimes called goose flesh or goose pimples — are the little bumps on your skin at the base of hairs that spring up involuntarily whenever you get cold or experience strong emotions, like fear, pleasure or surprise. They also have a scientific name: kutis ansterina.
Getting goose bumps is a reflex, which is an action your body has automatically without you even thinking about it. This particular reflex is known as the pilomotor reflex. Humans aren't the only mammals that have this reaction.
When you get cold or experience a strong emotion, your brain sends signals to your muscles that make them tense up. When the muscles in your skin that are attached to hairs do this, they make the hairs stand up and pull your skin up just a bit, creating goose bumps.
They're called goose bumps because, when you have them, your skin looks like the skin of a goose or a chicken whose feathers have been plucked out. So, if you want, you could call them chicken bumps, too!