by Leslie Cox; Monday; April 1, 2024

Did you know…

            … goosebumps are caused by a muscle?

 At the base of every hair follicle are tiny fan-shaped muscles called arrector pili. These muscles contract when the body is cold in an effort to warm the body up and cause a person’s hair to “stand up straight” on their skin…aka goosebumps.

My arrector pili muscles (APM) also tickle up goosebumps when I see a beautiful plant.