The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
In one day, adult lungs move about 10,000 litres of air.
11
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
In Ancient Greece, small penises were desirable, and big ones were for ‘old men and barbarians’
22
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
A person can live without food for about a month, but only about a week without water.
156
The average sperm cell swims at 8 inches per hour.
76