Sex Mistake No.1: 'I Know How to Please a Woman'

Men often assume that the way they've learned to please one woman works for all women. Not so.

"With every sexual partner you have, you do gain a growing body of knowledge of female bodies and female pleasure," Taormino tells WebMD. "But women's sexuality is complicated, and it's really individual."

Every woman's body responds in different ways to sensation, and every woman's anatomy is a little different. What feels amazing to one may do nothing -- or even cause discomfort -- for another.

"That is the detective work you need to do each and every time," Britton says. "We really each have a sexual fingerprint."

When it comes to intercourse, one key variable is your thrusting technique: Does she like it fast or slow? Deep or shallow? Or does she like to mix it up -- slow and shallow at first, and then fast and deep?

Also, no one sex position is every woman's favorite. She may prefer a certain sex position for several reasons. Different positions allow various angles of penetration, depending not only on her anatomy, but also the size and shape of your penis. Differences between partners' body shape and height may make some positions better than others. And for some women, it's important to have face-to-face intimacyduring intercourse.

"I talk to tons of women who say, ‘I know missionary gets a bad rap, but I really like it.' Others say, ‘It's got to be from behind,'" Taormino says. "People are really across the board when it comes to positions."