I have just been to the gym.
I was running on the treadmill and the woman (about 30) diagonally in front of me was running too. I was fixated on her boobs which were thudding up and down for 30 minutes. I could see by her bra straps that she had an everyday bra on.
Is this not extremely uncomfortable? I see it a lot.
I can't bear even a hint of boob movement when I run. (I am also very proud of my perky breasts, running unsupported must be asking for them to end up at your navel.)