For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
In one day, adult lungs move about 10,000 litres of air.
11
Your heart will pump about 212 million liters in its lifetime.
26
A human being loses an average of 40 to 100 strands of hair a day.
133
If your DNA was stretched out it would reach to the moon 6,000 times.
256
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
There are about 1,400 different species of bacteria in your belly button.
10
