After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Human hair and fingernails continue to grow after death.
7
Yawns are more contagious among people with closer relationships.
163
On average a woman has 4 sexual partners in her lifetime.
-143
The human body contains over a billion miles of DNA.
147
The human brain is more active during sleep than during the day.
28
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
Our Right Lungs takes more air than our left lung.
194