First of all, I always see the sun! The way I want to identify myself and others is with halos here and there halos, movements of color. And that, I believe, is rhythm.
The fact that maybe I had some success playing G'Kar doesn't guarantee me three years later that I can still do it, so I have to keep my senses alive and still be working on it.
Tiger Woods, Larry Bird, Wayne Gretzky, a pitcher just before a game, I would imagine they all have nervous energy. But as you perform, the nervous energy dissipates and you start to relax and you start to do what you do best.