Dr Berceli has put forward the idea that shaking is a therapeutic tool of the body as it attempts to regain homeostasis. However, most of us view our tremor as an embarrassment and an inconvenience. It is interesting that people with the non-tremor style of PD tend not to fare as well as those with a tremor. Berceli suggests that the body shakes out tension, trauma and stress at the cellular level where it can get stuck and lead to health problems. Personally, I have known for some time that, although I have a genetic susceptibility to developing PD, it's the traumas and stresses (unexpressed) over many many years that have led to its development. It is as though I've reached a time now when my body needs to release the build up. Dr Berceli has devised an exercise for trauma release called TRE which I am now using.