Held in farts enter your bloodstream and are bad for your body.
26
In one day, adult lungs move about 10,000 litres of air.
11
The average person's skin weighs twice as much as their brain.
131
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
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
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17