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
Children are more allergic to cockroaches than they are to cats!
46
Poor eyesight (myopia) is associated with higher IQ.
232
Due to the angle at which the optic nerve enters the brain, staring at a blue surface during sex greatly increases the intensity of orgasms.
252
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
Your ribs move about 5 million times a year, every time you breathe!
60
If you are cold you are more likely to be hungry because you use energy to keep warm.
143