In one day, adult lungs move about 10,000 litres of air.
11
Sitting straight upright in your chair is bad for your back. You should instead slouch at an angle of 135 degrees.
10
In Japan, condoms are commonly sold 'door to door'!
54
The average human body contains enough iron to make a small nail.
50
Fingernails grow nearly 4 times faster than toenails.
31
On average, there's 100 billion neurons in the human brain.
83
Poor eyesight (myopia) is associated with higher IQ.
232
The average person's skin weighs twice as much as their brain.
131