A couple of years ago on the BBC London News, they
showed a clip of how singing and dancing helped the
people who suffered from Parkinson's.
They didn't have to sing while dancing, or dance while
singing, but one of them would help with the symptoms.
My takeaway from this article is the simple fact that exercise is needed by everyone. The article isn't simply talking about Parkinson's, it's describing aspects of aging in general. There is just no excuse for anyone who is retired to not be working out an hour or two a day, in some form.
Good grief. Please tell me you do not believe everyone who is retired is the same age you are and their health is the same as yours. You're posting on a board where from what I've read there's an age range from early 50s to mid-90s. We are not a homogeneous group who all have the physical capacity to work out for two hours a day.
That presupposes all of us want to work out for hours every day. I know I don't, and I avoid like the plague the kind of puritanism that demands rigorous discipline in any form.