Thanks for your interesting post, Joe. I don't know how much longer I'll be able to retain these skills but so far so good. Gymnastics actually does work the same way. You aren't thinking about your movements when you're executing them. You set your mind to what you're about to do it and then at a point your brain switches from conscious thought to a kind of intuitive memory sequencing. In any case, my last actual tumbling run was when I was 36. I'm lucky I didn't break my neck.