http://www.msnbc.msn.com/id/20725154/
thought this might be an interesting article that many of us can relate to
apparently some study was done saying that current bras are TOTALLY inadequate, and that breasts can move up and down up to 8 inches (!) and in figure-8 patterns, leading to pain, etc.
also some info on how they're trying to make new, high-tech bras for exercise that combat this
kinda crazy...