4. Let the body breathe
Every part of our body is built with active cells. They need air to breathe and to work properly. When you are going to bed with clothes on, your body does not get enough air even though there is zero activity from the rest of the body. This is even more applicable for women who go to bed wearing their undergarments. While going to bed with underwear, you are giving bacteria and yeast to grow in and around your body. So sleeping naked will not let these breed and your body can breathe more freely. And that can be only beneficial for your health.