@lindes Thank you for your comment. I wanted to share some information with you about dry needling and myofascial release. Living fascia weaves through all the muscle fibers and organs in the body and is a conductor of electricity. When a therapist does dry needling, and places a needle into a trigger point in a muscle, it causes a twitch response which is a depolarization and release of the held electric charge that then causes the muscle to contract with a twitch. Here is some literature that describes this event.

The source is the Journal of the American Board of Family Medicine:
https://www.jabfm.org/content/jabfp/23/5/640.full.pdf
Excerpts:
"Myofascial pain is a common form of pain that arises from muscles or related fascia and is usually associated with myofascial trigger points (MTrP). An MTrP is a highly localized, hyperirritable spot in a palpable, taut band of skeletal muscle fibers.1 When an MTrP is stimulated, 2 important clinical phenomena can be elicited: referred pain and a local twitch response. "

"Dry needling an MTrP is most effective when local twitch responses are elicited, 14 probably because of rapid depolarization of the involved muscle fibers, which manifests as local twitches.19 After the muscle has finished twitching, the spontaneous electrical activity subsides and the pain and dysfunction decrease dramatically. "

Here are a few links that may also be of interest:
https://www.mayoclinichealthsystem.org/hometown-health/speaking-of-health/on-pins-and-needles-just-what-is-dry-needling
This video illustrates living fascia and how it moves and remodels as it changes between solid and liquid forms.

This is our discussion on Myofascial release and there are numerous links in the first few pages about MFR therapy. I have a lot of experience with MFR therapy and it has helped me a lot. My therapist taught me how to do MFR so I can self treat at home between clinic sessions.
https://connect.mayoclinic.org/discussion/myofascial-release-therapy-mfr-for-treating-compression-and-pain/
Isn't the video of living fascia interesting?