[slfnflctd]

I'm probably about to try this out. In my initial perusing it seems similar to a past insight I had.

Long ago, I was in a slightly altered state and it occurred to me that I was semi-consciously clenching muscles in my upper back and shoulders in a weird stress response... to the point where I couldn't unclench them easily. I found that trying to 'loosen up' and distract myself eventually gave me more control back, and relieved some of the discomfort.

I find it completely plausible that many of us may be channeling difficult emotions into maladaptive movements without realizing it. Restless leg comes to mind, also.