Survey findings released this week dispel the commonly held fantasy that satisfactory sex requires a significant time commitment. The survey, conducted at Penn State by the Society for Sex Therapy and Research, revealed that satisfactory sex for couples typically lasts 3 to 13 minutes. Movies, television, books and the internet have convinced many couples that if they aren’t having sex “all night long:” their sexual life is in the pits and they are missing out on something significant.

The survey included information garnered from psychologists, physicians, social workers, marriage/family therapists and nurses who have collectively seen thousands of patients over a period of several decades. According to the survey data, 3-7 minutes of intercourse is categorized as “adequate,” 7-13 minutes is “desirable,” 1-2 minutes is “too short” and 10-30 minutes is “too long.”

“A man’s or woman’s interpretation of his or her sexual functioning as well as the partner’s relies on personal beliefs developed in part from society’s messages, formal and informal,” the researchers said. “Unfortunately today’s popular culture has reinforced stereotypes about sexual activity. Many men and women seem to believe the fantasy models of large penises, rock-hard erections and all-night-long intercourse.”

“This seems to be a situation ripe for disappointment and dissatisfaction,” said lead author Eric Corty. “With this survey, we hope to dispel such fantasies and encourage men and women by providing realistic data about acceptable intercourse, thus preventing sexual disappointments and misfunctions.”