In one day, adult lungs move about 10,000 litres of air.
11
The average person will go on a date at least 100 times before they finally marry.
33
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
It takes about 20 seconds for a red blood cell to circle the whole body.
102
Human hair and fingernails continue to grow after death.
7
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15