Why do we get goosebumps? (Thinkstock)
Why do we get goosebumps?
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You asked us, "Why do we get goosebumps?"

Goosebumps are actually a useless holdover. They are from our hairier days.

We get them in reaction to the cold. We could also get them from to fear or any other strong emotion.

Here is what happens. Say we walk into a freezer. Or suddenly find ourselves face-to-face with a grizzly. The part of our brain called the hypothalamus kicks in.

It signals our body to make adrenaline. That causes muscles at the base of our hairs to contract. Then they stand on end.

We are not exactly covered in a dense coat of hair these days. Not most of us at least. So all we see are raised bumps.

It was different back in the good old days. Those raised hairs allowed us to trap a layer of air. The air protected us from the cold.
 
The hair-raising reaction also had another benefit. It made us look bigger to predators. That gave us a little time to either run or 'bring it.'
 
Well, I will be a monkey's uncle! Er, distant relative. Whatever.

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CRITICAL THINKING QUESTION
What does the author mean by “run or ‘bring it.’?”
Write your answers in the comments section below


COMMENTS (69)
  • haileyharris-har
    8/20/2015 - 10:39 a.m.

    They Say The Hair Raising Makes Us Look Bigger To PREDATORS So We Have A Little Time To Think "RUN OR HIDE"

  • reneestuart-har
    8/20/2015 - 10:40 a.m.

    The author means by Run to run away from the danger or whatever it is that is making u have that strong feeling or fear.Bring it would mean to stay there and challenge whatever it is that is bothering or dangerous to you.

  • blessingsjones-har
    8/20/2015 - 10:40 a.m.

    It means you could run away from the grizzly or try to fight it or another word for it is to bring it

  • lucydugan-har
    8/20/2015 - 10:40 a.m.

    He/She/They means that you either run away and try to avoid the danger, or face it head on and stop the danger, aka fight or destroy it.

  • johnquillin-har
    8/20/2015 - 10:41 a.m.

    i think the author by saying run or bring it means either make a run for it or use self defense to protect yourself.

  • amoscoleman-har
    8/20/2015 - 10:42 a.m.

    people get goosebumps because when you get so so cold you can get it cause bumps start to come out and stuff only when you are to sleepy and very cold

  • ameliarios-har
    8/20/2015 - 10:42 a.m.

    The author means by run or go for it by saying you can run from your fear or you can fight
    your fear.

  • corinnehollingsworth-har
    8/20/2015 - 10:43 a.m.

    the author means run if you are afraid or bring it as if you might be afraid but still believe that you can defeat you fear and in this case it is a big grizzly bear.

  • michaelfeingold-har
    8/20/2015 - 10:45 a.m.

    I don't know what the author means by that.

  • tiffanymckenzie-har
    8/20/2015 - 10:45 a.m.

    the author mean by run or bring that it can raise hair back and froth

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