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 human brain uses approximately as much energy as a 10 watt light bulb.
120
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
It is possible for you to survive even after the removal of the spleen, the stomach, one kidney, one lung, 75% of the liver, 80% of the intestines, and almost every organ from the pelvic and groin area.
218
Your body is creating and killing about 2.4 million red blood cells per second.
17
There are about 1,400 different species of bacteria in your belly button.
10
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89