The kicker was the scientific suggestion that sharing a bed with someone you care about is great for sex, but not much else. Stanley, a well-regarded sleep researcher at the University of Surrey whose gray-thinning hair hinted at his more than two decades in the field, told his listeners that he didn’t sleep in the same bed as his wife and that they should probably think about getting their own beds, too, if they knew what was good for them. As proof, he pointed to research he conducted with a colleague which showed that someone who shared a bed was 50 percent more likely to be disturbed during the night than a person who slept alone. “Sleep is a selfish thing to do,” he said. “No one can share your sleep.”
There just wasn’t enough room, for one thing. “You have up to nine inches less per person in a double bed than a child has in a single bed,” Stanley said, grounding his argument in the can’t-argue-with-this logic of ratios. “Add to this another person who kicks, punches, snores and gets up to go to the loo and is it any wonder that we are not getting a good night’s sleep?” He wasn’t against sex, he assured his audience — only the most literal interpretation of sleeping together. “We all know what it’s like to have a cuddle and then say, ‘I’m going to sleep now,’ and go to the opposite side of the bed. So why not just toddle off down the landing?”
Excerpted from “Dreamland: Adventures in the Strange Science of Sleep” by David K. Randall. Via Salon. Continue HERE
WANDERLUST 
Or you can just get a really big bed!