I have huge issues with cracked and painful nipples that are not going away (dd is 6 weeks old) - that's another story and i've made separate threads about it - but many people tell me i should have somehow prepared my breasts prior to birth, by rubbing them with a rough cloth or shower sponge, so they toughen up and aren't so sensitive. Even one doctor told me this could have prevented my problems. I recall reading somewhere that no preparation is required and that doing that could even be harmful since it removes the natural oils from the skin. What do you think, would it have helped to do this? Did any of you do it?