...and fasting are two of the best things available for PD (and admittedly two where I keep falling down - is there a PD joke in that? )

But seriously, there is far more to it than just building muscle. I started paying attention when I learned that there is a threshold that must be met to maintain plasticity in the nervous system. Then there are metabolic changes in lots of systems. And just jiggling our innards leads to neurotransmitter production in our GI tract. And it just goes on and on.

I gotta try it I guess. By a happy coincidence, my rebounder trampoline arrived yesterday. Boing! Boing!