Ildar Sagdejev
GOOSEBUMPS
Goosebumps are actually an unnecess-ary trait in humans that developed from our ancient monkey ancestors. This evo-lutionary adaptation had two purposes: protection from cold, and from danger. When the body feels very cool temperatures, miniature muscles attached to each hair, called the arrector pili, contract. This reaction, which causes the hair to stick up and tiny depressions in the skin to form, was used by our ancestors and by many animals today to form an "insulation layer" of thick hair. The other occasions when goosebumps appear is when one feels fear, surprise, threat, or extreme anger and excitement. This releases the stress hormone Adrenaline, which typically arises in these "flight or fight" situations. Just like in startled cats, the Adrenaline causes the hair to shoot up, resulting in a bigger and more intimidating look. This physiological form of protection against dangerous predators and hostile weather is now useless because of our lack of these large amounts of hair but still hasn't
managed to disappear. One of the most fascinating things about goosebumps is that they can form as a result of listening to music. Scientists theorize that these "music chills," called frissons, happen because of sudden volume changes or unexpected sections of a song. This induces a subconscious fear response or a rush of emotion, such as excitement, that is quickly quieted because it is, indeed, just music.
Do Fireworks give you goosebumps?
东林
EARTHLY EXPLANATIONS
BY JACKSON JONES