Thanks for that account Buddy. It's a reminder the we need to pay close attention to out bodies.
I came across a man on the local MUP a week ago who was lying just off to the side with a bleeding face. A couple had reached him just a few seconds before me. He had no memory of falling off the bike and had no explanation. I stood by for 15 minutes or so to make sure he was in fact back up on his feet. The couple offered to drive him back to his vehicle but he insisted on continuing. Eventually I rode on and I was left with the hope all worked out well for him. We are no longer young. Pay attention.