According to the National Sleep Foundation, you should give your sheets a good wash at least once a week. As you sleep, things like dirt, sweat, and allergens can get caught up in bedding fibers, leading to a build up of bacteria.

DriNights manufactures and distributes a popular brand of both night sweats bedding and night sweats sleepwear. While they used to be a little too slick feeling for my comfort, with clever fabrics that felt too much like polyester, they've greatly improved in recent years.