At the Seattle HOPE conference, Dr Becky Farley & Dr Cynthia Fox of LSVT-MOVE BIG & LOUD showed an example of two sets of monkeys:

(1) one set that did NOT exercise - just sat and watched

(2) one set exercised daily

When both sets got parkinson's symptoms, they did brain scans of both sets of monkeys:

(a) set #1 showed brain damage

(b) set #2 showed NO brain damage!

You can see this presentation on line at the nwpf website:

www.nwpf.org/presentations.aspx