Our eyes are always the same size from birth, but our nose and ears never stop growing.
269
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
22
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
The average sperm cell swims at 8 inches per hour.
76
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
19
In one day, adult lungs move about 10,000 litres of air.
11

