ASMR, or autonomous sensory meridian response, is a relaxing, tingly sensation, usually triggered by auditory or visual stimuli. ASMR also refers to the genre of online content made to evoke this sensation. Early ASMR content creators, also known as ASMRtists, started out on YouTube in 2009, making whispered videos with cellphone cameras and earbud microphones. While this was the start of intentional ASMR, the sensation itself is nothing new. I distinctly remember the wonderful head tingles I got playing school with friends when I was a little kid.