Sex is one of the most fascinating topics that humans have been pondering over since the beginning of time.

Here are 30 interesting facts about sex that you might never have heard of before:.

1. Orgasms Are Good For Your Health

Orgasms release endorphins which are natural painkillers and can help reduce stress levels. Women who have more orgasms live longer.

2. Your Brain Can Trick You Into Thinking You’re Having an Orgasm

Studies show that men and women can have “phantom” orgasms without any physical stimulation. It’s all in your head.

3. Women Can Get Pregnant While Already Pregnant

This rare phenomenon is known as “superfetation”. It occurs when a woman ovulates and becomes pregnant while already being pregnant. There are about 10 documented cases of this happening throughout history.

4. Men Have a G-Spot Too

The prostate gland can be stimulated during sex and can lead to intense orgasms for men. This area is often referred to as the “male G-spot”.

5. Sperm Can Travel At A Speed Of 28 Mph

Sperm is the smallest cell in the human body, but it can travel at speeds of up to 28 miles per hour.

6. Sex Can Boost Your Immune System

Having regular sex can help boost your immune system and reduce the chances of becoming sick.

7. The World’s Largest Sexual Organ Belongs To Whales

The blue whale’s penis can grow up to 8 feet in length, making it the largest sexual organ in the world.

8. Kissing Can Burn Calories

Who needs the gym? Kissing can burn up to 6 calories per minute!.

9. The Female Orgasm Was Once Thought To Be Evil

In the 16th century, the female orgasm was believed to be a sign of demonic possession and evil.

10. Women’s Nipples Can Increase In Size By Up To 25%

When a woman is aroused, her nipples can increase in size by up to 25%.

11. Cleopatra Invented The First Vibrator

Legend has it that Cleopatra invented the first vibrator using a gourd filled with bees.

12. People Who Have More Sex Are Happier

A study conducted by the University of Colorado found that people who have more sex are happier and healthier than those who don’t.

13. The Average Ejaculation Contains Around 1 Teaspoon Of Semen

One ejaculation contains around 1 teaspoon of semen, which can contain up to 500 million sperm cells.

14. The Clitoris Has More Nerve Endings Than The Penis

The clitoris has around 8,000 nerve endings, compared to the penis which has around 4,000.

15. The Romans Used Crocodile Dung As A Form Of Birth Control

Well, at least they tried. Thankfully, we have better options today.

16. Women Can Suffer From Penis Envy

According to Sigmund Freud, women can suffer from “penis envy” as they feel that they lack something that men possess.

17. 1 In 10 Adults Have Never Had Sex

Believe it or not, around 1 in 10 adults have never had sex.

18. The Average Time For A Man To Ejaculate Is 6 Minutes

The average time for a man to ejaculate during sex is 6 minutes.

19. The Oldest Known Depiction Of Sex Dates Back To 7,000 B.C

The oldest known depiction of sex dates back to 7,000 B.C and was found in a cave in Switzerland.

20. Sex Can Help Relieve Headaches

Having sex can help relieve tension headaches and migraines due to the release of endorphins.

21. The British Spent More On Porn During The Olympics Than On Medals

During the 2012 London Olympics, the British spent more on porn than they did on medals.

22. A Study Found That Women’s Sexual Attractions Are More Fluid Than Men’s

A study found that women’s sexual attractions are more fluid than men’s. Women are more likely to change their sexual preferences over time, while men tend to remain consistent.