Enamel is hardest substance in the human body.
61
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
The human body contains over a billion miles of DNA.
147
You forget 90% of your dreams.
256
If the human eye was a digital camera, it would have 576 megapixels.
25
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 largest cell in the human body is the female egg and the smallest is the male sperm.
682
It takes about 20 seconds for a red blood cell to circle the whole body.
102