This "fuzz" becomes much more difficult to break down with frequent inactivity of specific body regions, which leads to chronic immobility and pain. Generally speaking, the balls are meant to get into those “sliding surfaces” and break down the "fuzz" in a very localized manner in order to restore normal tissue mobility.
Anytime, theoretical mechanisms of change to human anatomy and physiology are described, there is always an opportunity for eye rolling and second guessing. In my experience as a physiotherapist and strength and conditioning professional, I have yet to meet two professionals with the exact same theoretical basis for the interventions they perform. Regardless, of where one stands in terms of theoretical understanding, it is hard to argue with obvious physical change in your own body. This was demonstrated in abundance throughout the weekend. Every technique and sequence that was performed was preceded by a “check-in” to assess one’s body pre-intervention, and then followed by a “check-out” to observe the after effects of the self care work. In my own practice, there was not one sequence that did not make substantial change from before to after, and looking around the room it was obvious to see that I was not the only participant with this experience. The most surprising change I experienced was dropping into a “thigh-to-calf” squat with my feet facing forward after about 5 minutes of rolling out my feet. Typically, the chronic tightness in my ankles make it impossible to keep my heels down in that position, but that did not seem to be an issue after the footwork.