In one day, adult lungs move about 10,000 litres of air.
11
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
There are about 1,400 different species of bacteria in your belly button.
10
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
32
The brain receives 20% of the body’s oxygen and 25% of total body glucose utilization, despite it accounting for only 2% of a person’s weight (about 1.4 kilograms).
8
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89