Goosebumps: What your body is actually doing 🥶 #science #biology #explained

Goosebumps happen when your body reacts to stress. Learn why this ancient reflex still triggers today. When you feel nervous, your system releases adrenaline. This triggers your fight-or-flight response, causing tiny muscles attached to hair follicles to contract. As a result, your skin puckers and your hair stands on end. This is a remnant from our furrier ancestors who used the goosebumps reflex to appear larger to predators. Even though we lack thick fur, our biology persists in keeping these old survival reactions. These human body facts help explain why we still get chills during stressful moments. Subscribe for more simple explanations of how your body works, and tell us in the comments what triggers your chills most often.