Actresses can get outrageously precious about the way they look. That's not what life's about. If you starve yourself to the point where your brain cells shrivel you will never do good work. And if you're overly conscious of your arms flapping in the wind how can you look the other actor in the eye to respond to them?
I don't really know why I care so much. I just have something inside me that tells me that there is a problem and I have got to do something about it. I think that is what I would call the God in me.