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The key to mind-blowing sex is knowing what works and what doesn't. But that can be hard when there's sooo much info -- both correct and incorrect -- out there.

"I'm always amazed that even the most educated, intelligent men and women believe certain things about sex that are completely false," says Barbara Keesling, PhD, professor of Psychology of Human Sexual Behavior at California State University, Fullerton, and author of "The Good Girl's Guide to Bad Girl Sex."

We asked her to offer up the most common carnal misconceptions -- and set us straight.

Ten Famous Sex Myths, Debunked

    Women only like bad boys and have to be cajoled into being in the mood, right? Ha! We consulted with Barbara Keesling, PhD, author of "The Good Girl's Guide to Bad Girl Sex" and got the truth about 10 other crazy-pants sex myths.

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    Myth: Women have to be in a relationship to enjoy sex.
    The Truth: Your orgasm potential has nothing to do with whether you're single or committed. Having great sex has to do with physical sensations, not your status. What's more, many women report having stronger orgasms when they masturbate than they do with a partner.

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    Myth: Women don't (and shouldn't!) masturbate as often as guys.
    The Truth: Ha! There is absolutely no rule as to how much you should get yourself off. Do it is much as you'd like. In fact, the more you do it, the more you'll understand what it takes to reach climax and that can help you guide your guy when you're in bed together.

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    Myth: Vaginal orgasms feel better than clitoral orgasms.
    The Truth: There is no such thing as a better orgasm -- they're all pretty fantastic. They definitely feel different because they originate in different spots. Try experimenting and achieving the various types -- clitoral, vaginal, g-spot -- to see which you prefer.

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    Myth: A woman should be able to orgasm during intercourse.
    The Truth: Putting that kind of pressure on yourself may prevent you from having an orgasm at all. A lot of women are unable to reach their peak through straight penetration. Most need clitoral stimulation as well. So don't feel bad touching yourself, having your partner touch you, or even using a vibrator while he thrusts.

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    Myth: Women don't get turned on by porn.
    The Truth: There's no hard rule on this one. Some chicks like naughty flicks, others don't. If porn doesn't do the trick for you, try erotic literature. Lots of women prefer it because it allows them to use their imagination when picturing what's going on.

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    Myth: Guys love lingerie.
    The Truth: Many men just find lingerie complicated. Think about it, all those snaps and ribbons and straps are confusing and a pain in the ass to get off of you when he wants to get some. Most guys will tell you they much prefer a woman naked.

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    Myth: If you're good in bed, you should be able to please anyone.
    The Truth: Some people have instant in-bed chemistry, others have to work on it. That means, you could sleep with 10 guys and they would all have a different opinion of your skills. (And you of theirs!) Communication is key to being able to have good sex with someone. Tell him what you like and don't like, and ask him to do the same. If you're too shy to say it, show him by guiding his hands.

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    Myth: Men prefer women who pursue them sexually.
    The Truth: Evolution tells us the exact opposite. Most men like to feel like they've worked for a women's attention. However, that doesn't mean that you have to sit in the corner and wait for a man to approach you. Go ahead and signal to a guy that you're interested by flirting. Just avoid things like grabbing his crotch in a crowded bar.

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    Myth: Happy couples always have good sex.
    The Truth: No one always hits a homer in the bedroom. You could be in the best relationship and have an off night if one of you isn't feeling well or is stressed. If you are always having bad sex, it may be a bigger problem. If this is the case, discuss what you both need in bed to enjoy yourselves more

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