There is “muscle” in the hair of the body.

When you have goose bumps, have you ever thought about what made your hair stand up? The answer…

There is "muscle" in the hair of the body.
There is “muscle” in the hair of the body.

When you have goose bumps, have you ever thought about what made your hair stand up? The answer is the vertical hair muscle. A bundle of smooth muscle fibers allows the animal to stand up to insulate or intimidate other animals. Early humans also possessed this instinct, but as humans evolved, this function gradually lost its meaning. Until now, only the habit of goose bumps when stimulated is left.


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