I pushed on Ron's shoulder softly trying to feel which way he was inwardly moving. He subtly corrected each time I found the tiny internal movement. The cool thing is that I could feel the internal spirals.
Then he did the same with me. Have you ever tried this?
Growing up on a farm raising, training and showing horses, one of the things I learned from being around them was to keep a hand touching them when close to feel the inner movements of their bodies. If I was to push them I could feel the subtle corrections they would make and I could predict when and what direction they were going to move in.