' Sleep Sex' Unromantic, Even Dangerous. Sleep Sex. WebMD Feature Archive Sleep sex, which is also known as SBS (sexual behaviors during sleep).
Sleep sex, or sexsomnia, is a condition in which a person will engage in sexual activities while asleep. This condition falls within the broad class of sleep.
Can You Have Sex in Your Sleep? File under “things that go bump in the night” up to 11 percent of men have had sex (or at least tried to) while they were asleep.