I don't get the tingly part people supposedly experience from hearing certain things, but my first experience with those types of videos were in the form of stuff like unwrapping clay from cellophane, where they carefully opened it without tearing it, then focused on how geometric the shape was before crushing it and kneading it, which to me, was more the satisfaction of knowing how that feels and how mindlessly entertaining it is to fidget sometimes. Ive never ever understood the audio focused videos, whispering, chewing tapping, etc. None.