Men’s Fitness offers a guide to understanding and dealing with night sweats. 

Night sweats can be a side effect of a serious problem, the byproduct of a momentary illness, and even a visible sign of stress. It can also be the result of conditions in your environment—a hot room, a clingy partner—in which case it’s probably avoidable with just a few simple adjustments to your environment.

So if you suffer from night sweats—and if you do, you know that “suffer” is the word for it—answer these three questions from dermatologist Lindsey Bordone, M.D., of Columbia University Medical Center, and you’ll be on the road to understanding the problem and deciding how to deal with it.