• A bra, short for brassiere is a form-fitting undergarment that is primarily used to support and cover women's breasts.
•The bra's main function is to support the weight and structure of the breast. However, women often have a lot of tension and stiffness localised where the bra strap is placed. Tight bras can also severely affect the ribcage, as well as cause back and neck pain.
•Is it OK to wear a bra to bed? There's nothing wrong with wearing a bra while you sleep if that's what you're comfortable with. Sleeping in a bra will not make a girl's breasts perkier or prevent them from getting saggy. And it will not stop breasts from growing or cause breast cancer.