After reviewing data on how married couples in the U.S. tackle housework, as well as self-reports of how often they enjoyed intercourse, sociologists at the University of Washington (UW) say that couples who shared the burden of chores -- cooking, cleaning and caring for the lawn -- tend to have the least active sex lives.
Analyzing data of thousands of Norwegian couples, they found the divorce rate was higher for those doing equal amounts of housework than couples in which the women did more.