I.e., the assumption that contractible fascia is a basic answer isn't the basket I'd put all my eggs into.
Thanks for the input! Actually I also don't think the fascia itself is contracting either, in martial art usage. That post by Cady suggested otherwise, which is what alarmed me.
Does anyone know of labs that are actively researching kokyu in any form?
I think it is true that we have already discovered the structures involved, and furthermore, I am pretty sure we have the techniques to directly observe them in action. But someone with interest, funding, and expertise needs to set up the project.