We heard from a therapist recently, "Motion is lotion." Good to keep this in mind. Exercise may not produce any long term improvements, or help stabilize balance problems, but we have seen short-term mobility improvements as a result of LSVT BIG exercises, tai chi, stationary bike riding, walking, and other gentle movement exercises. Good physical therapists can help a PD patient become more aware of which body part limitations contribute to falls or difficulty getting up or moving around safely. Awareness and exercise training, with concentration and thought, can help a PD patient feel more normal for at least part of the day. It helps to keep expectations reasonable. Exercise moderately for 1/2 hour or so, and feel ok for about an hour or two. This has been our experience.