1. Scientists at Northwestern University have discovered that infants who gained weight the fastest went through puberty sooner and had a higher number of sex partners later in life. They also largely kept a more athletic or lean build in their adult life, regardless of gender.

2. For a reason still baffling scientists, heavy-set or overweight women orgasm at a much higher rate during intercourse than average or underweight women; regardless of health.

3. In a 25-year study which involved over 5,000 men split into straight and gay groups, scientists that measured their penis sizes published results that showed that the gay men, on average, had 1.33 inches over the straight men. Gay men also won in the width department as well.

4. Women are more likely to cheat on their partners when their chances of getting pregnant are at a peak (usually the week before her period). The hormone fluctuations during ovulation also make women more attracted to aggressive, athletic men.

5. If you are a female and your ring finger is longer than your index finger, you have more testosterone in your body than the average female. If you are a male and your index finger is longer than your ring finger, you have more oestrogen in your body than the average male.

6. A survey in the United States found that caucasian women are most likely to engage in anal sex.

7. Women prone to constant migraines have higher sex drives than those who don’t.

8. How men behave right after sex with a certain woman for the first time determines if she is ever going to have sex with him again.

9. Researchers reported in March that the phenomenon of “coregasms” is real. These are orgasms caused by exercises that tense the core abdominal muscles – in other words, gym-friendly orgasms, no touching required.

10. An experiment was carried out using 10 men and 10 women who were rated on a scale of 1-10 using the golden ratio for attractiveness. They were put into a room, where they all had to wear full-coverage body suits that only showed their face, and had their ranking number on their forehead. Unaware of their own ranking number, they then had to try to partner up with someone but had the freedom to offer or deny the partnership with hand movements.

The results of the experiment were very interesting; no one got anyone that was more than two numbers below or above their rank, and higher ranked people went straight for each other, lower ranked people went straight for each other, and those in the middle kept getting denied until they got their appropriate partner.

11. A study published this May in the journal Archives of Sexual Behaviour found that in women, high testosterone was associated with a greater interest in masturbation, but less interest in orgasming with someone else.

12. A study of 19,000 U.S college students found that, while only a minority of students judged women more harshly than men, young people still do judge people for having a high number of sexual partners.

13. 44% of women find it impossible to enjoy sex with a man who is not their intellectual equal. Just 31% of men share this problem.

14. A recent study found that sexual arousal diminishes disgust and can encourage us to have sex with partners that we would otherwise find unattractive.

15. Research carried out in November 2012 discovered that early human Neanderthals commonly engaged in sexual activity