I cycle on a stationary byke to maintain strength of my legs. I do push-ups to keep my arms strong.
I received no guidance or encouragement to exercise from the numerous neuros I have seen.
But I was encouraged to exercise by a relative who had PD 7 years before me.
I started exercising from day one and I increased the rate over 5 years and up to now.
I cannot say objectively that exercise had any impact on the progress of the disease but to me, exercise has it's immediate rewards by giving a feeling of liveliness and joy.
Imad