Autonomous sensory meridian response, is a neologism for a recently described perceptual phenomenon characterized as a distinct, pleasurable tingling sensation in the head, scalp, back, or peripheral regions of the body in response to visual, auditory, olfactory, and/or cognitive stimuli. The nature and classification of the ASMR phenomenon is controversial. Tom Stafford, a professor at the University of Sheffield, says, "It might well be a real thing, but it's inherently difficult to research."
Put on stereo headphones and see if it affects you. It does nothing for me unfortunately but it's apparently very relaxing for others so I thought I'd share it. Warning: some people who make the vids are pretty weird and creepy lol.