What Happens Inside Your Body When You Get Scared?

A loud bang behind you. You flinch before you even know what it was, and a few seconds later your heart is racing, you're breathing fast and the hair on your arms is standing up. We follow one scare through your body in five stops: the spark (your amygdala), the alarm (adrenaline), the rush (heart, lungs, muscles), the side effects (pupils, sweaty palms, butterflies, goosebumps) and the calm-down. Plus: where the word "adrenaline" comes from, who named "fight or flight", and whether a scare can really turn your hair white overnight. 0:00 What happens when you get scared 0:20 The five stops 0:33 Adrenaline and "fight or flight" 1:13 Stop 1: The spark 1:48 Stop 2: The alarm 2:19 Stop 3: The rush 2:55 Stop 4: The side effects 3:29 Stop 5: The calm-down 3:58 Can a scare turn your hair white? 4:21 Recap Simplified for fun and general understanding. #fear #adrenaline #humanbody #science #animation