Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
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
A human being loses an average of 40 to 100 strands of hair a day.
133
There are about 1,400 different species of bacteria in your belly button.
10
The human brain uses approximately as much energy as a 10 watt light bulb.
120
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
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
Your thumb is about the same size as your nose.
124