The largest cell in the human body is the female egg and the smallest is the male sperm.
682
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
It takes approximately 12 hours for food to entirely digest.
93
Gorillas can catch human colds and other illnesses.
205
Yawns are more contagious among people with closer relationships.
163
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
The average sperm cell swims at 8 inches per hour.
4