Every human spent about half an hour as a single cell.
144
Mushrooms are more closely related to humans than they are to plants.
47
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
The average sperm cell swims at 8 inches per hour.
4
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
On average a woman has 4 sexual partners in her lifetime.
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