Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
There's 100 trillion good bacteria living in your body.
17
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
19
Your thumb is about the same size as your nose.
124
A person can live without food for about a month, but only about a week without water.
156
In Ancient Greece, small penises were desirable, and big ones were for ‘old men and barbarians’
22