You may think the only reason to be naked in bed is to make Shakespeare’s metaphorical “beast with two backs,” but there are a surprising amount of benefits to sleeping completely nude. For one, it actually helps you fall asleep. The ideal temperature for sleep ranges from 60 to 67 degrees Fahrenheit, and stripping off your clothes can help your body reach that temperature.
Sleeping naked can also help prevent a yeast infection. Yeast infections thrive when conditions are moist, so sleeping naked allows you to “air out” down there and reduce excess moisture. One other benefit to sleeping naked has to do with male fertility. Semen quality is better when men don't wear clothes while sleeping. Sleeping naked helps lower core body temperature, as research has shown that heat has a negative effect on sperm.