Have you ever heard of “sleep divorce”? Many couples swear that sleeping separately actually improves their sex life, and it turns out there’s actually science behind it. Poor sleep takes a toll on an individual, and therefore a partnership. If one partner is an erratic sleeper—tossing, turning, snoring, or traipsing to the bathroom, for example—the other is more than likely to become one too, even if it’s not their natural constitution. The annoyance can lead to increased cortisol, which we all know is a sleep sucker. Sleep deprivation makes life a lot harder for one, and is double-trouble for two: with a compromised night of sleep, couples have more conflict and less ease of resolution.