There's 100 trillion good bacteria living in your body.
17
There are about 1,400 different species of bacteria in your belly button.
10
Your heart will pump about 212 million liters in its lifetime.
26
About 400 different kinds of microbes live on and in the human body.
-3
The average sperm cell swims at 8 inches per hour.
76
Wearing tight pants can lead to impotence in men.
120
Your wounds heal faster if you lick them, you instinctively do this for that reason. Tears help, too.
20