Never heard of ASMR before stumbling on these videos on Prime. They sure seemed weird after I took a few quick looks. So... I looked up ASMR. Not much scientific research on it. Hardly any interest showing. But among the people whom it works for, the interest is huge. Apparently, large e-communities sprang up in a grass roots fashion. There are even genres and sub- genres, from what I can tell from looking into it over the last week. The guy in this video is one of the creative people exploring these positive effects that can be brought out in some people. I was surprised as hell that this video was pleasant and relaxing to me. No "tingles" for me but much relaxation. Apparently different people react to different sounds, visuals, rhythms, etc. I commend this guy and others for exploring this new-to-me aspect of at least some of us humans. If this sounds interesting to you, look into the efforts of this guy and others. Maybe you will be surprised, as I was, to find value in some of their works. Cheers! And use headphones or at least ear buds, not speakers.
I never realized this sensation had a name, but have been experiencing it from childhood. While studying about kundalini rising, I read the analogy of the thousand petal lotus blossoming on the crown of the head. I thought, ah, I know what that feels like! Sometimes reading letters from friends triggered it. Getting “picked” during a game of 7 Up triggered it. Having someone do the trick of pulling imaginary string from my palm triggered it.

While many colloquial and formal terms used and proposed between 2007 and 2010 included reference to orgasm, there was during that time a significant majority objection to its use among those active in online discussions, many of whom have continued to persist in differentiating the euphoric and relaxing nature of ASMR from sexual arousal.[citation needed] However, by 2015, a division had occurred within the ASMR community over the subject of sexual arousal, with some creating videos categorized as ASMRotica (ASMR erotica), which are deliberately designed to be sexually stimulating.[8][9]