Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
There are about 1,400 different species of bacteria in your belly button.
10
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
You see your nose at all times, your brain just chooses to ignore it.
30
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
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16