On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
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
Enamel is hardest substance in the human body.
61
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
The human body contains over a billion miles of DNA.
147
It takes about 20 seconds for a red blood cell to circle the whole body.
102
The human brain doesn't stop developing until about 25 years old.
102
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191