However, the truly novel findings came from a second experiment, when 110 participants viewed ASMR videos while connected to biological feedback machinery. After watching the videos, the heart rates of people with ASMR slowed on average by more than three beats per minute. And their skin conductance levels—a measure of physiological arousal – were significantly increased compared to those in the non-ASMR group.

The writing in this article helped me understand ASMR, but the videos don't seem to be the best examples (it doesn't help that these examples aren't very long). The best examples of what they are talking about to me would have to be the crackling of a fire. Also, whispering in my ear gives me intense tingles, but part of that may be the vibrations off of my ear drum.
One category depends upon external triggers in order to experience the localized sensation and its associated feelings, which typically originates in the head, often reaching down the neck and sometimes the upper back. The other category can intentionally augment the sensation and feelings through attentional control, without dependence upon external stimuli, or 'triggers', in a manner compared by some subjects to their experience of meditation.[citation needed]
There are deeper meanings to "bliss". As more and more people mature, process their emotions and connect with others and their true purposes, "bliss" will happen between more and more people. Basically it's asexual, a bit pleasurable but more importantly it wakes up more areas of the brain/body-complex. People processing this need to activate their bodies more in other to balance the maturing mind/spirit-aspects of their being ("grounding"), and the physical activity may also help with backpains. The tendency of such people is to be a bit too seclusive, so need to remember to assert oneself more as well.
It's also not something that affects everyone. Apparently only part of the population "gets" ASMR, just like not everyone "gets" magic-eye pictures or Beyoncé. It could even be a genetic thing for some, like the people who were born with the crossed wires that make them think cilantro tastes like Comet. The actual science on ASMR is scant, and some neurologists aren't sure that it even exists. Those who do think that the tingling feelings produced by ASMR might be tiny seizures. But for those who do experience ASMR, there's a wealth of material out there to give you a brain boner.
Can ASMR be triggered by a completely internal stimulus? I get this tingling in my scalp and cheeks, then like a wave of warm fuzzy that washes through my body. It sounds very similar to what ASMR is described as, but it happens to me when I daydream about certain things. It happened to me more as a child than as an adult, in fact it has probably been several years since I had an experience until today, which led to me googling it. My trigger is visualizing/ daydreaming about somewhat exciting things gone perfect, a perfect lap on the motocross track, flying high G maneuvers, and most recently navigating my sailboat through some rough waters. I hate to admit to this because I don’t want to sound egotistical, but it doesn’t seem to be the subject of the daydream that brings about the ASMR like experience, but the thought of someone giving me recognition for my accomplishment that actually triggers it. Also, once I’ve had a response from a daydream about a particular experience, I can’t simply revisit the same daydream and have it trigger another experience. I’m 40, and have always experienced this, but I never knew how to explain it or if it were normal or not, so I’ve never even tried talking about this before.
Allen verified in a 2016 interview that she purposely selected these terms because they were more objective, comfortable, and clinical than alternative terms for the sensation.[10] Allen explained she selected the word meridian to replace the word orgasm due to its meaning of point or period of greatest prosperity.[clarification needed][citation needed]