Wearing underwear to bed is a common nighttime practice for many women. In fact, the mere thought of going to bed without underwear may make you a little uncomfortable. However, before you put the kibosh on going to bed "commando," it's important to understand why sleeping in underwear can be unfavorable to your health. On the one hand, covering up your vaginal region during the night can actually create the perfect kind of moist, dark, and warm breeding ground for bacteria. And if you're a woman who has a proclivity for vaginal and yeast infections, sleeping with underwear is practically laying the groundwork to develop these kinds of undesirable medical outcomes, especially if you're a bedtime thong-wearer. Further, an additional perk of sleeping without underwear is that it reduces the possibility of developing other vaginal irritations and inflammation. Plus, many women who go without underwear appreciate the sheer ease and simplicity of sleeping without it, especially since it also can help to increase the intimacy levels between you and your partner. Having less laundry and more closeness is not a bad trade-off.