If you hold farts in during the day, they'll just come out when you sleep.
16
There's 100 trillion good bacteria living in your body.
17
A person can live without food for about a month, but only about a week without water.
156
The average person's skin weighs twice as much as their brain.
131
In 1996, research found that having excessive body hair is linked to higher intelligence.
23
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89