There are about 1,400 different species of bacteria in your belly button.
10
A fetus develops fingerprints at eighteen weeks!
32
About 400 different kinds of microbes live on and in the human body.
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The lifespan of a tastebud is ten days.
130
Lack of water is the #1 trigger of daytime fatigue.
148
The lense of the eye continues to grow throughout a person's life.
34
The average sperm cell swims at 8 inches per hour.
4