Researchers at the University of Hertfordshire asked 1000 people to describe their favorite sleep position and then rate their personality and quality of their relationship. They found that 42 percent of couples sleep back to back.
Sleeping facing each other is least popular
Only 4 percent of the 1000 participants reported spending the night facing one another. Thirty-one percent reported sleeping facing the same direction, 12 percent spend the night less than an inch apart and only 2 percent sleep over 30 inches apart.
Couples who are touching during sleep are happiest
They also found that 94 percent of couples who spent the night in contact with one another were happy with their relationship, while only 68 percent of those that didn’t touch were happy.
The further apart, the worse the relationship
Researchers also found that the further apart a couple slept, the worse their relationship. Eighty-six percent of couples who slept less than an inch apart were happy with their relationship, compared to 66 percent who slept more than 30 inches apart.
Extroverts sleep closer to their partner
The research also revealed that extroverts tend to sleep closer to their partners, and more creative people tend to sleep on their left hand side.