We have been fooled in so many ways, the latest I found was a french study debunking a couple of myths about the use of bras;
"Women have long been told that a good bra can help support the chest, relieve back pain and prevent sagging. However, a new 15-year French study reveals the opposite: bras do little to reduce back pain and, over time, they can actually make breasts sag even more.
According to The Connexion, the findings suggest that breasts would gain more tone and support themselves if no bra was used. Researchers explain that bras limit the growth of supporting breast tissues, leaving the breast to wither and degrade more quickly.
The study found that women who took off their bras for good experienced a 7mm lift in their nipples each year they didn't wear a bra. Researchers also found that bra-less women developed firmer breasts and saw their stretch marks fade."