The first patented condom was meant to be reused!
47
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
In one day, adult lungs move about 10,000 litres of air.
11
There are more bacteria in your mouth than there are people in the world.
60
While 7 men in 100 have some form of color blindness, only 1 woman in 1,000 suffers from it.
50
The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
People who sleep late have more mental stamina and can outperform early risers.
33