The human body contains over a billion miles of DNA.
147
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
A person can live without food for about a month, but only about a week without water.
156
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
The average person's skin weighs twice as much as their brain.
131
In one day, adult lungs move about 10,000 litres of air.
11