For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
The average sperm cell swims at 8 inches per hour.
76
In Ancient Greece, small penises were desirable, and big ones were for ‘old men and barbarians’
22
You see your nose at all times, your brain just chooses to ignore it.
30
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
If you hold farts in during the day, they'll just come out when you sleep.
16
In one day, adult lungs move about 10,000 litres of air.
11
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
22