You really should let "the girls" breathe and get improved circulation while you sleep. (I NEVER sleep in one, and my "girls" are still perky, even at my age, so that whole thing about sagging is simply a myth)
i sleep in one every night, im still here. but i heard its actually good, keeps your stuff nice and up, like not saggin. i dont know though, i dont do it for that, i do it because im more comfy with one on
Well since I'm a guy I have no firsthand knowledge here. It seems to me that it would be uncomfortable but not unhealthy. If those girls are locked up all day it seems to me like you would want to let them out at night. I don't like to wear anything at night. Is that TMI? I sure have enjoyed reading these answers and comments.
I sleep with a bra on every night - I find my boobs actually get sore when I don't sleep with a bra on... But I'm guessing it's just a personal preference thing. If your bra is cutting off your circulation day or night then you are not wearing the right sized bra - this would naturally cause discomfort and you should get someone to measure you to check what size you need.
Most studies show that wearing a bra inhibits he draining of the lymphatic system which is located in our boobs, because a bra tends to constrict those channels. Most medical research now believes that it's better and more healthy to wear a bra as infrequently as possible, and recommend that if you wear one during the day, you should take it off as soon as you return home. It appears that it's definitely more healthy to sleep without it, at the very least.
many studies are looking into the relationship between wearing a bra and breast cancer, and although the findings are far from definitive as yet, it does appear that there is a much lower incidence of breast cancer among people who limit the time they wear a bra. Those findings appear to be cross cultural as well.
it probably isn't good for you, ive heard it can suffocate you... I wear one because I'd spend my whole night either giggling because of my shirt rubbing on them or scratching them. I hate not wearing a bra overnight :b