Yeah John, getting old is not for sissies.
In my case, I have a theory; Sleep gives my body plenty of time to figure out what it's going to spring on me when I wake up.

I know that I have arthritis in both knees but they don't hurt much at all. The right knee evidently didn't like that idea so it sprung a new one. "Lessee, this should work, I'll give out an occasional sharp pain and refuse to hold up his weight just for a second, that'll do it!"

And so it did. Extremely good timing. I had just come to a stop on the Nighthawk keeping the right foot on the brake and holding up the bike with my left. I put the right foot down and it did exactly that. I almost dropped it. Even a 500 pound motorcycle is hard to pick up facing it. My knees won't allow me to pick it up by backing with it. I was outsmarted. ???
We need more geriatric doctors out there to outsmart these old bodies.

All you younger riders out there, remember to keep on good speaking terms with your body or later on, it'll give you 'payback time'.
