The adult human brain weighs about 3 pounds (1,300-1,400 g).
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Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
Your thumb is about the same size as your nose.
124
It takes about 20 seconds for a red blood cell to circle the whole body.
102
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
The human body contains over a billion miles of DNA.
147
The human brain has the capacity to store everything that you experience.
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