All the time, but that's when I try to pull it off when I'm sweaty. Just waiting to cool down and dry a bit really helps. To be honest, though, I often go bra-less, up here, where I have only deer and bears to see me. I'm also at an age where ... let's just say my movie star days are well behind me. Support is not much of a concern.

On another note, I do wish someone would make a heated bra.