The human brain is more active during sleep than during the day.
28
You can't tickle yourself.
29
In one day, adult lungs move about 10,000 litres of air.
11
The average person's skin weighs twice as much as their brain.
131
The average sperm cell swims at 8 inches per hour.
4
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
The human brain doesn't stop developing until about 25 years old.
102