Sex is natural and one of the most enjoyable activities a human being can engage in.Whether you're being tortured by 24 people in a parking lot or a traditional preacher's penis inserted into a vagina, it's an activity most of us can share.It's not surprising that sexual experiences are so common. There are many wonderful or weird sexual facts in the experiences of people all over the world that paint a picture of this romantic relationship.

So whether you're looking to expand your understanding of sex, or just gawk at some weird sex facts and statistics, here we present you 5 fun sex facts!

1.15% of heterosexual women had never had an orgasm.
Yes, about one in six heterosexual women has never had an orgasm. However, every woman can achieve orgasm, although you may need to play with different techniques to find what works for you. Most women are most likely to orgasm by stimulating the clitoris with a vibrator or other sex toy, so it may be worth a try for those who have trouble reaching orgasm. Good luck!sex machine

2. A third of marriages start with hooking up
According to the National Marriage Project, a third of married couples begin their relationship with an unconditional hookup.Note that there may be more strings attached than you expect.

3. One in five people use their smartphones during sex.
One in five adults aged 18-34 use their smartphones during sex, according to a Harris Interactive survey.I'm not here to judge, but it's probably not a good sign if you're being criticized while checking uber to eat.

4. Sex helps stop migraines
If you have frequent headaches and migraines, sex may be of great help. One study showed that 60 percent of migraine sufferers think sex helps reduce their migraines.If you're out of aspirin, try something weird, okay?

5. The average male penis size is 5-7 inches
As you might expect, the average erect male penis is 5-7 inches. While one might say that only 15% of men have an erection with a penis longer than 7 inches, and only 3% have an erection with a penis longer than 8 inches!