In one day, adult lungs move about 10,000 litres of air.
11
You see your nose at all times, your brain just chooses to ignore it.
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Your body is creating and killing about 2.4 million red blood cells per second.
17
In Ancient Greece, small penises were desirable, and big ones were for ‘old men and barbarians’
22
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
12
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
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