Why do men often wake up with an erection? The good news is it’s a sign the plumbing works. But did you know women also experience this phenomenon? Here, read all about why women and men wake-up with engorged genitals. If only morning sex somehow overcame morning breath.

Another mystery that may mystify you: Why do some women scream and moan in bed like they’re gunning for an Academy Award?

Is it real, or is she faking it? Turns out all those vocalizations aren’t about her partner’s technique as much as it is about her playing to her partner’s ego. Since most women experience orgasms during foreplay rather than from furious pumping, what you hear later on is all performance. As reported in a recent study, 66 percent of women get loud for the sake of their partner’s esteem. And 87 percent of women who responded say that they moaned and groaned to signal their partner that…it was time to be done.