rankin notes that there are various factors that can contribute to sagging breasts, including “pregnancy and breastfeeding, genetics, smoking, dramatic weight-loss or gain, and perhaps even high-intensity activity”. he explained that this makes it “very hard to measure the effect of wearing a bra to bed, with so many other factors having far more significant effects”.
so while there’s no medical reason for sleeping braless or with a bra, there’s a significant reason you should consider: comfort. denduluri says that for those women who find bras uncomfortable, they should go braless to help them sleep better. but some women, particularly those with larger breasts or very sensitive nipples, may prefer the support and protection of a bra.
she added that for those who do prefer to wear a bra when they sleep, they should one that’s comfy. if you are in the market for a bedtime bra, there are lots of options to choose from. some women tend to skip the tight or heavy-duty underwire bras and choose light options like a bralette, which allow for comfort, support and breathability.