In response to the question re what to do about sweaty boobs, in Lissa Rankin, MD's owningpink.com:
Another possibility, other than talcum powder: how about not wearing a bra some of the time? It may not reduce the sweating, but it'll reduce the discomfort of a wet bra.
Women often feel that they have to sanitise their breasts, hide their shape & configuration, by hiding them in a bra. Let them swing loose once in a while!
It's part of Erotic Integrity.
