It was done by NIH. The researchers were surprised. LOL P.S. -- that same study determined that the people who are happiest with their sex lives are married regular church attending Christians. LOL And the same for women who most frequently experience the Big O. LOL
Worldly people know how to talk the talk. Christians walk the walk when it comes to sex. LOL
Gentlemen: Only ever [do it] with your wife.
Ladies: Only ever [do it] with your husband.