Those who smoke a pack of cigarettes a day drink half a cup of tar a year.
Humans are the only animals capable of drawing a straight line.
On average, an individual grows over 450 miles of hair in a lifetime.
When a person smiles, 17 muscles are engaged.
Human DNA contains 80,000 genes.
Men shorter than 4.2 feet and women shorter than 3.9 feet are considered dwarfs.
White blood cells live in the human body for 2 to 4 days, while red blood cells live up to 3 to 4 months.
Every human bends her finger 25 million times in a lifetime.
Human heart is equal in size to a human fist.
Average weight of an adult’s heart is approximately 0.5lbs.
Human body contains four minerals: apatite, aragonite, calcite, and christobalite.
Human brain generates more electric impulses in a day than all telephones of the world combined.
The loss of vision caused by exposure to bright light is called snow blindness.
Total weight of bacteria living in the human body is 4.4lbs.
Human brain produces 100,000 chemical reactions per second.
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