Good point. I completely forgot about that, though it's something I use all the time. There's some good science backing up the practice, too.Visualization.
I'll explain. I screwed up my shoulder and had to have it operated on. Judo practice was ruled out by the surgeon for some reason, so I was in a similar situation and not wanting to go nuts.
My Aikido teacher suggested that I visualize myself in class, go through the entire class in my imagination. He meant aikido class, but I used it for judo as well. It worked, and through the practice stumbled into the same sort of visualization type of practice used by lots of professional & Olympic atheletes. It worked well for me to bridge the gap while I was healing up.