A great question that I’ve wondered many times, answered is his latest blog post by Tom Myers here : http://www.anatomytrains.com/blogs/tom-myers
(As a quick refresher: Ida Rolf’s 10-series is the foundation, if not the protocol, of the school of bodywork called structural integration. SI works with the body’s 3D shape through the fascial network—the all-pervasive connective tissue covering literally everything in the body.)
Liam Bowler 