Another perk of sleeping on your belly? Prone sleeping (belly down) has been “strongly associated with all kinds of charged dreams, such as having sex, being locked up, being smothered or unable to breathe, having a love affair with a celebrity, seeing a UFO, and being naked. How come? The physical nature of sleeping prone—-being pressed against a bed—-could induce sexual dreams,” says Dr. Calvin Kai-Ching Yu, PhD, an associate professor at Hong Kong Shue Yan University. Now we’re talking…sign us up.

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