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
If you hold farts in during the day, they'll just come out when you sleep.
16
In one day, adult lungs move about 10,000 litres of air.
11
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
Our Right Lungs takes more air than our left lung.
194
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
199
Your body is creating and killing about 2.4 million red blood cells per second.
17