June 5, 2014

Science Daily/American Academy of Sleep Medicine

Couples are more likely to sleep in sync when the wife is more satisfied with their marriage. Results show that overall synchrony in sleep-wake schedules among couples was high, as those who slept in the same bed were awake or asleep at the same time about 75 percent of the time. When the wife reported higher marital satisfaction, the percent of time the couple was awake or asleep at the same time was greater.

"The sleep of married couples is more in sync on a minute-by-minute basis than the sleep of random individuals," said Gunn. "This suggests that our sleep patterns are regulated not only by when we sleep, but also by with whom we sleep."

http://www.sciencedaily.com/releases/2014/06/140605141857.htm