Sex can be surprising and confusing, even for the most experienced among us. From the mysterious female ejaculation to the one piece of clothing that can make you orgasm faster, here are few interesting sex facts you must need to know.

Sex can improve memory in women: According to studies, frequent penis in vagina sex can also help improve a woman’s ability to remember words and phrases. It happens by increasing the blood flow to the hippocampal region of the brain, and although the same can be accomplished via any aerobic activity, it’s far to fun to do with sex.

There are two types of female orgasms: While orgasms are pretty straight up for men, with women they are a bit more complicated. In fact, women can have two types of orgasms: vaginal and clitoral. Though both are enjoyable on their own, when down together, the experience can be quite amazing.

Period sex is fun sex: While taboo, sex on a woman’s period is actually far more common and enjoyable than you may have been lead to believe. Though messy, some say the extra lubrication during period sex actually makes it feel better. Make sure you use protection because there are still chances to get pregnant when on your period.

Size doesn’t really matter: People may emphasize the desire for larger-than-average penises, but most women would like something a bit more fun-side in their patent. According to one study, women were more likely to cheat o husbands with larger penises because they associated large penises with “pain and discomfort during sex.”

Apple are Aphrodisiacs: We’ve all heard of aphrodisiacs such as strawberries and oysters helping to put men and women in the mood, but what about apples? According to 2014 studies, women who ate apples more than once a day reported better self-lubrication and overall sexual function compared to women who ate less than one apple a day.

Sperm is a super swimmer: Though sperm might look quite stationary outside of the body, once inside of a woman, they can swim pretty fast. Science says that sperm can travel up to 5 mm per minute, which if scaled up to size, would be equivalent to a salmon swimming 500 miles per hour or a whale swimming 15,000 miles per hour.

Simultaneous Orgasms Are Extremely Rare: Orgasming at the same time as your partner is so rare that most individuals will never experience this in their lifetime. In fact, orgasming at all should be considered an achievement, especially for women. According to reports, roughly 75 percent of men in relationships always have an orgasm with their partner, compared to 30 percent of women.

Women think about sex a lot: Society may make women out to be dainty flowers who wouldn’t dare have sexy thoughts on their own, but in reality, they think about sex a lot and would like to have more of it. One survey says, about 53 percent of women were not having as much sex as they would like, and nearly 75 percent of women involved in the survey expressed a desire to make love at least 3 times a week.

Men do have a G-spot: What? Yes, it’s true! Men have an area on their body similar to the sought after female “g-spot” which, when stimulated, can cause extreme pleasure. The area is known as the prostate and is located right under his bladder. It can be reached by placing a finger inside of his anus and moving it in a circular motion.

Infertility is far more common than you imagine: Infertility can be devastating, but research suggests it’s far more common than you may think. According to one study, infertility impacts one in eight women, and the Centers for Disease Control and Prevention found that about six percent of married women aged 15 to 44 are still unable to get pregnant after a year of unprotected sex, and about 12 percent of women have difficulty carrying a pregnancy to full term.

Do you know any such interesting fact?