The average sperm cell swims at 8 inches per hour.
4
The human brain uses approximately as much energy as a 10 watt light bulb.
120
A person can live without food for about a month, but only about a week without water.
156
Gorillas can catch human colds and other illnesses.
205
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
Babies crawl an average of 200m a day.
212
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 one day, adult lungs move about 10,000 litres of air.
11