How My Body Works - Once Upon a Time.. Life - Heart & Breathing (VHS) PAL.

Did you know..

...that your heart never rests?

•that your heart is about the

size of your fist?

..that when you cough the

stream of air leaving your

lungs can reach a speed of

160 kilometres per hour?

..that you take about 20,000

breaths every day?

Find out all about it in

this video of Once Upon

A Time... Life

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