By weight, Bone is five times stronger than steel.
417
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
Men get hiccups more often than women.
93
The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
The male fetus is capable of attaining an erection during the last trimester.
75
Chocolate, sex, and laughter are all important for a healthy brain.
37
The average sperm cell swims at 8 inches per hour.
4
Pain travels through the body at 350 feet per second!
23