Beer, pizza, soft drinks and nachos can all lower testosterone levels in men and have been linked to lower sperm counts.
The first gay couple in recorded history lived in Ancient Egypt in the year 2400 B.C.
The male royal manicurists named Niankhkhnum and Khnumhotep were found buried together in a shared tomb similar to the way married couples were often buried. Along with that are hieroglyphs combining their names together to say "joined in life and joined in death".
Breastfeeding women release pheromones that increase sexual desire among surrounding women.
Listening to music, especially instrumentals, can release the same hormones as climaxing during intercourse.
A male's testicles hang at different lengths so they don't damage each other or collide when running/sitting.
About 200 calories are burned during an intense sex session - the equivalent of running for 15 minutes on a treadmill.
Female kangaroos have three vaginas.
Male sperm has an alkaline covering to protect it from the acidity of a woman's vagina.
Claudius, the Roman Emperor had a love life that was viewed as strange at the time because he only liked women, not men.
Lucian Freud, an artist who was the grandson of Freud beded 500 lovers during his lifetime.