- Kelly Subin, class of 2017.
And my question is, why do we get goosebumps?
- Here's the short answer.
Goosebumps are totally useless in modern day humans,
but I'm getting ahead of myself.
Let's go back in time, shall we?
Keep going, keep going.
Okay, right there, stop.
This will work, whew.
There's actually two reasons why we get a goosebump.
The first one is due to cold.
Hair stands up to create an insulating layer
between the skin and the hair.
Back in our animal kingdom days,
that was very useful to keep warm.
It also occurs in response to fear, anger,
pleasure, euphoria.
The goosebump, this involuntary nervous system
response stimulates the very small muscles
called the arrector pili muscles to contract.
That causes the hair to stand up and the skin to bunch up.
Why are they called goosebumps?
Well, it's not very scientific.
Actually, it just looks like the skin of a goose
after the feathers have been picked off of it.

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