The average sperm cell swims at 8 inches per hour.
76
Your thumb is about the same size as your nose.
124
The human body contains over a billion miles of DNA.
147
Enamel is hardest substance in the human body.
61
Chewing gum boosts your brain power.
285
It takes about 20 seconds for a red blood cell to circle the whole body.
102
One human hair can support 3 ounces.
191
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217