If you’ve ever experienced a tingling sensation on your skin in response to a certain visual or sound, you may have had an autonomous sensory meridian response—or ASMR as it’s more commonly known as.

Craig Richard could not stop watching Bob Ross paint. It was 1983, and Ross's television show, The Joy of Painting, had ­recently premiered on PBS. Richard, then in his early teens, would come home ...

Have you ever watched a video that sent a chill up your spine, made your head tingle, or helped put you to sleep? If so, have you ever wondered why? What caused you to have such a visceral reaction to ...