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Not that I have saved anywhere, but next time I find some I'll send 'em your way! ^^
I can't imagine that it would be BAD for you not to wear a bra, though. I mean, humans didn't evolve the breasts that they did if it was evolutionary advantageous. ^^; Evolution is a greedy algorithm - it won't select for something worse that may lead to something better later - Mother Nature can't see that far ahead! X'D Not that I think we're done evolving as a species, or that our species doesn't have room for improvements, but I can't imagine thousands of years of evolution have resulted in breasts that are advantageous unless coupled with a man-made item that was only invented a few hundred years ago. ^^;
It's also difficult, because it would require long-term experiments with a large experimental group from basically the age of puberty until death, using a very diverse study group, to get clear results. ^^ And honestly, the extent would depend on breast size, posture, body shape, spinal health, dietary conditions,
weight, nutritional factors from the time of birth on, and a whole lot of environmental and genetic factors that would be hard to isolate. I doubt we'll ever get a super clear answer. I say, do what feels best for you, and stick with that. ^^