train connective tissue over a long period

[Peacedog]

We do use partials in Hermetics to train the electric and magnetic currents as part of our fascia training system.

I've also seen the use of weights, usually rocks, to train the fasciae in the heavy training method of ziranmen. Although in that case it was used as a static hold or fairly slow controlled movement.

Finally I've seen xing yi people hold a jar of ball bearings in san ti for the same purpose.