It takes about 20 seconds for a red blood cell to circle the whole body.
102
If your DNA was stretched out it would reach to the moon 6,000 times.
256
One human hair can support 3 ounces.
191
Every year your body replaces 98% of your atoms.
119
Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
-137
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99