04/16/2026
Waking up drenched in sweat can feel alarming, especially when the room is not warm and nothing seems out of the ordinary.
Night sweats happen when your body activates its cooling system during sleep. This is often tied to shifts in body temperature regulation, hormone levels or how your nervous system is responding overnight.
Common causes can include stress, anxiety, infections, certain medications or hormonal changes. Even things like heavy bedding, alcohol or late meals can play a role. In many cases, night sweats are temporary and resolve once the underlying trigger passes.
But when they happen frequently or are paired with other symptoms like unexplained weight loss, persistent fever or fatigue, they may be worth paying closer attention to.
Your body uses sleep as a time to reset and regulate. When something interrupts that process, it can show up in ways like night sweats.
If the pattern continues, a healthcare professional can help evaluate what may be contributing and guide next steps.