Why do chills go down the spine when something happens?

[Cicero]

So when I watch certain movies and a big part happens chills go down my body. Why is that and how does that work?

[Apollo.]

Apparently it's due to your body's fight or flight mechanism. Basically when you get scared your heart beats faster your nerve endings twitch making your body ready for a physical attack. That's the best explanation I can give but im often wrong so I welcome being corrected if necessary!

[anyone50]

It's actually an adrenalin rush. It's a hormone that is secreted by the adrenal medulla in response to stress and increases heart rate, pulse rate, and blood pressure, and raises the blood levels of glucose and lipids.

[Swagamemmnon]

Sometimes I get chills when something hasn't even happened yet, like I'll just be doing my math homework and then woah sudden apprehension.

[stev]

I get that sometimes when I'm responding to a medical call. Its an adernaline rush.

[rocketsheep]

fffff