Human thigh bones are stronger than concrete!
63
Every year your body replaces 98% of your atoms.
119
On average, women have always lived longer than men.
195
Wearing tight pants can lead to impotence in men.
120
In one day, adult lungs move about 10,000 litres of air.
11
Some people have a "natural alarm clock" allowing them to wake up when they want. This is actually caused by a burst of the stress hormone adrenocorticotropin.
15
The human brain is insensitive to pain.
76
An average adult produces about half a liter of flatulent gas per day, resulting in an average of about fourteen occurrences of flatulence a day.
8