Is there a real condition where aren't supposed to sweat while you sleep?

Answer 1

Nighttime sweating can be one sign of cancer. However, cancer is not the only cause of nocturnal sweating, and other factors are involved. For example, hormones, environmental temperature, and the ability to convect heat away from the body are 3 kinds of factors that influence sweating. Sleeping in a cooler room, or with less clothes and blankets can reduce sweating to a normal level.