A person can live without food for about a month, but only about a week without water.
156
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
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
Within three days of death, the enzymes that once digested your food begin to eat you.
22
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
The human brain uses approximately as much energy as a 10 watt light bulb.
120
If you hold farts in during the day, they'll just come out when you sleep.
16