Wearing a bra does more harm than good – it does nothing to reduce back pain and weakens the muscles that hold up the breasts, resulting in greater breast sagging, Jean-Denis Rouillon, a sports science expert from the University of Besançon, France, reported after a 15-year study.

Does wearing bras cause sagging?

“Wearing a bra doesn't affect the risk of breast sagging, or what is called “breast ptosis.” It also won't impact the shape of your breasts.

Does sleeping without a bra cause sagging?

Grace Ma, M.D., a plastic surgeon at Piedmont, sets the record straight. “There are all of these rumors out there that if you sleep in your bra, your breasts won't sag as much,” says Dr. Ma. “That really is a myth.