Need a brain?

I live in Fort Point right down the street. I’m 43.  I’m diagnosed  with early onset Parkinson’s disease.  Currently still using my brain, but curious about how it does not work.  Avid cyclist still exercising hard to protect what I have left of my brain, also wondering about possibility of new neural pathways being built.   Example:  I don’t swing my left arm while walking.  That’s the basal ganglia’s fault. So I think about walking while walking.  Big steps, swing that left arm.  Over time it becomes habit.  I’ve used my whole brain to pick up the basal ganglia’s slack.  But have I created a new neural pathway?