There’s an anecdote in one of F.M. Alexander’s books in which he tells of a child he was working with who had had very restricted mobility because of extreme habitual muscular tension. Using the techniques he had originally developed to deal with his own problems with bodily coordination, Alexander unwrangled much of this tension, bringing her body into a much more neutral alignment. Her response was to complain about how strange she felt.
I have been thinking about this story recently in the context of my own challenges in rebuilding my relationship with the piano. Some of my technical work has involved refining what I do with my hands and fingers, but most of it is about not doing stuff with my shoulders, back, glutes, legs, and (more weirdly, as I have got deeper into this process) intercostals muscles and muscles deep in my abdomen.