0:01

You Jesy's bet you didn't

0:03

know. Interesting trivia that's hopefully

0:06

going to make you go, Oh. And so all of us, every

0:08

single one of us, we would have had this at some point

0:10

in time, maybe either called, which is usually

0:12

the reason behind it or maybe just

0:14

scared goose bumps. But

0:16

do you know how goose bumps are formed?

0:19

I thought as just the skin reacting. Well, first

0:21

of all, the medical term is is and

0:23

serene now cute as mean skin and

0:25

answer means goose and goose

0:27

bumps are not just our skin green wing,

0:29

it's actually caused by a muscle

0:31

in our skin. So fan shaped

0:33

muscles called erector pili

0:36

muscles, which is at the base of each hair

0:38

follicle. So I was quite surprised to hear that each

0:40

hair follicle and we've got quite a lot hair

0:42

right, actually has a muscle while these muscles

0:44

are the ones that's responsible for goose bumps.

0:46

So what happens is when the body is cold

0:49

or when you're scared, the muscles contract

0:51

to generate heat and it causes

0:53

your hair to stand up straight on

0:56

your skin. Now, the raised hair follicles

0:58

cause the skin pores to close,

1:00

and the hair is standing up sort of trap a layer

1:03

of air near the skin holding on

1:05

to that body heat. So now, you know,

1:07

goose bumps. When you do get it, they're caused

1:09

by a muscle disease

1:13

that you didn't know.