The Egyptian Sleep Method Is Going Viral — But Does It Work?

By Kendra Cherry, Sep 3, 2025

“The Egyptian sleep method involves sleeping under a damp sheet, which cools off from evaporation,” explains Alex Dimitriu, MD, psychiatrist and founder of Menlo Park Psychiatry & Sleep Medicine. Because water absorbs heat as it evaporates, your body temperature drops as the water gradually evaporates. Some variations of this method suggest sleeping in minimal (or no) clothing. Another alternative is to wear a damp T-shirt to bed. For the best results, make sure that your bedroom is well-ventilated to avoid trapping excess humidity. He notes that sleeping under a wet cloth isn’t always the most desirable option, but it *can* be helpful in some cases. “If you are sleeping in a really hot environment, with no other options, it might be worth a go. Just don’t over-wet the sheet!” he says.

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