Those random chills everyone gets, what's up with them?
I'm not sure what they're called so i can't search for it, i tried "chills", but that returned so much on Google i didn't even know where to start. I noticed as a little kid i constantly got these random chills for no appearant reason, but noticed it happened quite often while peeing. As i grew older, i started noticing my friends having this random twitch/chill out of nowhere, my girlfriend gets them and i brought up how it happened frequently for me when peeing, she said she does the same.
Soooo, what causes this?