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
There are about 255 babies born worldwide every minute.
46
One human hair can support 3 ounces.
191
It takes about 20 seconds for a red blood cell to circle the whole body.
102
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Yawns are more contagious among people with closer relationships.
163
Due to the angle at which the optic nerve enters the brain, staring at a blue surface during sex greatly increases the intensity of orgasms.
252