It is possible to go blind from smoking too heavily.
50
On average, there's 100 billion neurons in the human brain.
83
If your DNA was stretched out it would reach to the moon 6,000 times.
256
The average person can live for eleven days without water, assuming an average temperature of 60 degrees fahrenheit.
15
One quarter of the human brain is used to control the eyes.
43
A study in the UK states that men need at least two "guys nights out" each week to stay healthy.
5
The smallest human penis ever recorded was just 5/8 of an inch long!
77
We are born with 350 bones, and die with 206.
135