If you hold farts in during the day, they'll just come out when you sleep.
16
A human being loses an average of 40 to 100 strands of hair a day.
133
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Your body is creating and killing about 2.4 million red blood cells per second.
17
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89