A human being loses an average of 40 to 100 strands of hair a day.
133
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
-137
A person can live without food for about a month, but only about a week without water.
156
Your fingernails grow faster in summer.
744
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
The average sperm cell swims at 8 inches per hour.
4