I know that, generally, a relaxed body begets a relaxed mindset/attitude. I do consciously try to maintain a relaxed body that is free of tension, but I've noticed that my ass cheeks are almost always clenched while I stand. Is this normal, or should I make a conscious effort to relax them until they become relaxed naturally? When I relax them, I notice no change in my posture or overall comfort, besides the fact that I'm having to relax my ass cheeks on purpose.