It depends on what I sleep in. I cannot sleep in pj pants anymore, I feel suffocated. When I can I sleep in a night gown, or tank and shorts. If I slept in a night gown, I usually change, but not always. Tank and shorts, I don't change. For me it is more of the fact that I've gained weight, but refuse to buy bigger clothes, so most of my "clothes" are too tight and uncomfortable. I am also a bra sleep, always have been. I just feel naked without it.