After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
Obsessive nose picking is called Rhinotillexomania.
101
Human hair and fingernails continue to grow after death.
7
The human body contains over a billion miles of DNA.
147
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
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
The world's shortest man measures only 21.5 inches.
73