I'm intrigued by your post, but for the most part feel pretty baffled by the descriptions on how to do this exercise. Unfortunately, understanding directions on how to do various kinds of exercises similar to this has long been a challenge for me (since my brain dysfunction started).
I did do a fair amount of googling on this topic however, and watched a bunch of videos today on the vagus nerve. As much as I thought I knew about it, I feel I got quite an education today. One thing that caught my attention, was that it is apparently the key for initiating a parasympathetic response.
I ended up running across an intriguing 2-min. video on how to reset the vagus nerve. Interestingly, she says it only takes 15 seconds! Here's a link... --- Resetting the Vagus Nerve.
She mentions in the video that the device she uses is the "Accu Point Pen"
. It costs about $15 at Amazon, and from the few comments I read, sounds fairly interesting.
I'm intrigued enough to consider getting it, as I feel my vagus nerve function was seriously affected by a head injury/whiplash when I was a teenager. --- BTW, one other thing I discovered today is that a "toned" vagus nerve is important to control inflammation, which made sense to me if it truly is the primary catalyst for initiating a parasympathetic response.