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.

The pretty blond woman is plucking at the bristles of a hairbrush with gold-manicured fingertips, tapping her nails softly against the wooden handle as she holds it close to a microphone. Bathed in ...