The human brain doesn't stop developing until about 25 years old.
102
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
The human body contains over a billion miles of DNA.
147
In one day, adult lungs move about 10,000 litres of air.
11
The human sigh acts as a physiological reset button.
23
There are about 1,400 different species of bacteria in your belly button.
10

