A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
In one day, adult lungs move about 10,000 litres of air.
11
The average person's skin weighs twice as much as their brain.
131
Poor eyesight (myopia) is associated with higher IQ.
232
On average, there's 100 billion neurons in the human brain.
83
Every human spent about half an hour as a single cell.
144
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14