BUT. I've learned something weird about my posture. It's bad, I already knew that. I tend to hunch forward and my right shoulder does pull front. But my good posture isn't right either. When I stand/sit up straight, throwing my shoulders back and putting my chest out (heh) I actually throw myself off balance. I rock my shoulders back too far which causes my lower back to curve in - toward my stomach, and my bottom ribs to be too high. Logical - sit up straight does involve the spine being straight. But this is the posture I've had for YEARS. Trying to change it now is a conscious thought process about how I am sitting and standing all the time. It's very strange. You try to "keep your ribs connected to your spine - don't let them float" and see how you do. It's weird to be aware of my physicality nearly all the time and it's bleeding into how I hold my head, and other ergonomic things. So it's all good in the long run, but will be an interesting relearning process.
On a related topic - anyone have good ideas how to type on a laptop ergonomically? I know that going back into rehearsal is going to make this process more difficult - either the keys are at a good height for typing, or the screen is high enough I don't kink my neck looking down all the time. Does anyone have any theories on achieving both?