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
There are more bacteria in your mouth than there are people in the world.
60
Fidgeting can burn about 350 calories a day.
201
While 7 men in 100 have some form of color blindness, only 1 woman in 1,000 suffers from it.
50
There are about 1,400 different species of bacteria in your belly button.
10
Medical research has found substances in mistletoe that can slow down tumor growth.
32
You have no sense of smell when you're sleeping!
72
The largest cell in the human body is the female egg and the smallest is the male sperm.
682