WEBVTT - How much oxygen does a person consume in a day?

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<v Speaker 1>Welcome to brain Stuff from how Stuff Works dot com

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<v Speaker 1>it go to meeting dot com slash brain Stuff. Hi,

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<v Speaker 1>I'm Marshall brain with today's question, how much oxygen does

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<v Speaker 1>a person consume in a day? The average adult at

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<v Speaker 1>rest inhales and exhales something like seven or eight liters

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<v Speaker 1>of air per minute. Think about a two liter soda bottle.

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<v Speaker 1>Every minute you're inhaling and exhaling about four of those.

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<v Speaker 1>That totals something like eleven thousand liters of error in

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<v Speaker 1>a day. The air that is inhaled is about oxygen,

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<v Speaker 1>and the air that's exhaled is about fift oxygen, So

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<v Speaker 1>about five of the volume of air is consumed in

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<v Speaker 1>each breath and convert of the carbon dioxide. Therefore, a

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<v Speaker 1>human being uses about five fifty liters of pure oxygen

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<v Speaker 1>or nineteen or so cubic feet of pure oxygen per day.

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<v Speaker 1>A person who's exercising obviously uses a lot more oxygen

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<v Speaker 1>than that. You can determine how much air is moving

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<v Speaker 1>through your lungs by exhaling into a plastic bag of

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<v Speaker 1>known volume at each breath and seeing how long it

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<v Speaker 1>takes to fill the bag. Do you have any ideas

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