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Every minute you breathe in 13 pints of air.

Your lungs contain almost 1500 miles of airways and over 300 million alveoli.

 

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THE RESPIRATORY SYSTEM Last Updated on 2008-08-29 at 13:22 WHAT IS THE PURPOSE OF BREATHING? You have to breathe because all of the cells in your body require oxygen. Without oxygen, your body wouldn't move. It would be like a parked car... More »

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Modify Content Sequence for Breathe For Life