Your body is creating and killing about 2.4 million red blood cells per second.
17
Held in farts enter your bloodstream and are bad for your body.
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You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
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.
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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
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
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There are about 1,400 different species of bacteria in your belly button.
10
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.
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