You see your nose at all times, your brain just chooses to ignore it.
30
In one day, adult lungs move about 10,000 litres of air.
11
10 seconds is the amount of time until unconsciousness after the loss of blood supply to the brain.
108
A person can live without food for about a month, but only about a week without water.
156
The human brain is insensitive to pain.
76
Sex burns about 360 calories per hour.
860
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
The average person can live for eleven days without water, assuming an average temperature of 60 degrees fahrenheit.
15