Fact of the Day Image September 3rd

We get goosebumps when we are cold. Goosebumps are when our hair sticks up because of muscles under our hair folicles. This is actually a leftover trait from when humans had fur and more hair on their bodies. This helped early humans because it helped them trap heat in between their hair and acted as a blanket! Over time, humans evolved to have less hair, but still have the goosebumps as a remaining feature of human evolution!