November 23, 2015

Did you know that goosebumps were inherited from our more hairy ancestors? Whenever we feel a chill, the muscles around our hair follicles contract and cause the hairs to stand up. This is also called the pilomotor reflex. In animals, this creates an extra layer of air that can be used for insulation. The thicker the layer of hair/fur, the more heat retained. Maybe if I had that, I wouldn't had complained so much about the South Bend chills.