If you were to roll a lung from a human body and out flat it would be the size of a tennis court.
36
The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
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
In the average lifetime a person will breath in about 44 pounds of dust.
21
A person infected with the SARS virus, has a 95-98% chance of recovery.
23
Your body is creating and killing 15 million red blood cells per second!
14
The average human body contains enough fat to make seven bars of soap.
45

