The average sperm cell swims at 8 inches per hour.
76
The human body contains over a billion miles of DNA.
147
Your heart will pump about 212 million liters in its lifetime.
26
Your thumb is about the same size as your nose.
124
Yawns are more contagious among people with closer relationships.
163
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
Enamel is hardest substance in the human body.
61
Chewing gum boosts your brain power.
285