While men can take about three to five minutes, on average, to achieve an orgasm, it can take women up to 13 minutes. "Foreplay for men is everything that happens about three minutes before sex," Dr. Brizendine says. "Whereas for females, it's everything that happens the 24 hours before sex. Because if she gets upset or angry about something, then she's not in the mood by the time sex is going to happen."
Just thinking about or visualizing sex sends blood rushing to a penis. But it takes much more to put women in the mood. "Temperature and comfort are very important to achieving orgasm," Dr. Brizendine says. "Researchers in the lab found that if they didn't keep the woman's feet warm, they had difficulty reaching climax. So cozy socks may not be sexy, but they get the job done."