On record dates like that I never felt too nervous because everything was really overdubbed. When we did that album, we were in the studio for probably a week, so you had a lot of opportunity to fix things.
When God hands you a gift, he also hands you a whip; and the whip is intended for self-flagellation solely.
One of the things I've always enjoyed is moving around and staying fit. Physicality is such a big part of being an actor, but it's also about stillness and silence.