There are a lot of things that people don’t know about sex. Here are 15 sex facts that will probably surprise you.

1. The average person will have sex for about 3-5 minutes before they reach orgasm.

2. The vast majority of people (about 90%) actually prefer foreplay to intercourse.

3. Most people reach their sexual peak in their early to mid-20s.

4. It’s estimated that only 25% of women orgasm from intercourse alone. The rest need some form of clitoral stimulation to reach orgasm.

5. Contrary to popular belief, the G-spot is not a myth. It’s a sensitive area located inside the vagina, about 2-3 inches up from the opening.

6. It’s estimated that around 10% of the population is gay or lesbian.

7. Men aren’t the only ones who have wet dreams. Women can have them too.

8. The average person has about 10 sexual partners in their lifetime.

9. The average person masturbates about once a week.

10. Only about 30% of people actually use condoms during sex.

11. The average person spends about $60 a year on sex toys.

12. STDs are a lot more common than you might think. In fact, it’s estimated that 1 in 2 people will contract an STD at some point in their life.

13. The most popular day for people to have sex is Saturday.

14. Sunday is the least popular day for people to have sex.

15. The average person has sex about 104 times a year.