So is it possible that something so easy to trigger, which feels so great, really has no harmful side effects? Slight headaches, tiredness and nausea are listed as possible reactions but - aside from blissful sleepiness - I've yet to experience any of these. The only slight downside to ASMR is that it's a little addictive.
For most of my adult life I've suffered from insomnia. I've tried many different supposed remedies, including hypnosis, intentional sleep deprivation, exercise, strict routines, warm milk before bed and even Zopiclone.