The human sigh acts as a physiological reset button.
23
It takes about 20 seconds for a red blood cell to circle the whole body.
102
The average office desk has 400 times more bacteria than a toilet.
22
There's 100 trillion good bacteria living in your body.
17
Brain freeze is caused by the brain sensing the drop of temperature on your palate and increasing blood pressure in an attempt to save you from freezing.
14
Although African-Americans make up only 13% of the U.S. population, they accounted for one half of the estimated new HIV/AIDS diagnoses in 2004.
70
Panophobia is the fear of everything.
52