Ilse Blansert (aka The Waterwhispers on YouTube) discusses her experiences with ASMR, or Autonomous Sensory Meridian Response, a curious, little understood physiological reaction to gentle sounds or "triggers" that provide relief from stress and insomnia. The videos of Blansert and her peers are hugely popular on YouTube and have helped to create a wide, digital community who can now sleep soundly as tingles dance up their spines.