For every woman expecting the earth to move, there are two with more practical motives.
From relieving boredom, to keeping the peace or curing a headache, women have sex for many reasons, but romance and passion come rather low on the list, a new book has revealed.
One woman even admitted to having sex just so her husband would take the trash out.
"Research has shown most men find most women at least somewhat sexually attractive, whereas most women do not find most men sexually attractive at all," said the authors of Why Women Have Sex, Cindy Meston and David Buss.
RELATED: Edible Aphrodisiacs
Having apparently discounted physical attraction, the 1,000 women interviewed by the Texas University professors gave a huge range of reasons for sleeping with a man.
One said she did it for a spiritual experience, proclaiming: "It's the closest thing to God."
But mostly the explanations were far more mundane, with 84 percent admitting to having sex just to ensure a quiet life or to bargain for household chores.
"I have sex to relieve the boredom because it's easier than fighting," said one woman in the study. "Plus it gives me something to do."