Fascinating and Strange Facts About Evolution and Early Humans

Goose Bumps and Their Evolutionary Purpose

Many human traits, including organs and behaviors, have lost their original functions through evolution. Goosebumps, for instance, are believed to have served the purpose of raising body hair to appear larger and scare off predators. They may have also helped trap an extra layer of air for insulation. Although we have lost much of our body hair, the physiological response of goosebumps remains.