Did you know? A TINY BUMP WITH AN ANCIENT JOB…

Goosebumps form when tiny muscles attached to hair follicles contract, pulling hairs upright. Cold, fear or even moving music can trigger this automatic reflex.

For our hairier ancestors, raised hairs helped trap an insulating layer of air, keeping them warm.

In furry animals, the same response can also make them appear bigger when threatened.

Humans have far less body hair, so goosebumps offer little protection against the cold.

Those tiny bumps are a visible reminder of an ancient survival mechanism.