Is it called pillory response? Kinda neat how we lost our hair but kept the fine muscles to bristle the hair to make us look bigger and protect us through a show of implied dominance. What other vestigial traits does the human animal have? Fascinating.

But we should heat up. The ‘chills’ also refers to a feeling of coldness on one’s back or their arms.

You get the the ‘chills’ from the sudden sharp decrease in blood flow to the outer layer of your skin. Less blood flow means less heat and thus you feel very cold, very rapidly.

Something like cat do when they get angry, they become all fluffy