There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
In one day, adult lungs move about 10,000 litres of air.
11
If your DNA was stretched out it would reach to the moon 6,000 times.
256
A person can live without food for about a month, but only about a week without water.
156
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193