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Speaker 1: I'm Marshall brain with today's question, how much oxygen does
Speaker 1: a person consume in a day? The average adult at
Speaker 1: rest inhales and exhales something like seven or eight liters
Speaker 1: of air per minute. Think about a two liter soda bottle.
Speaker 1: Every minute you're inhaling and exhaling about four of those.
Speaker 1: That totals something like eleven thousand liters of error in
Speaker 1: a day. The air that is inhaled is about oxygen,
Speaker 1: and the air that's exhaled is about fift oxygen, So
Speaker 1: about five of the volume of air is consumed in
Speaker 1: each breath and convert of the carbon dioxide. Therefore, a
Speaker 1: human being uses about five fifty liters of pure oxygen
Speaker 1: or nineteen or so cubic feet of pure oxygen per day.
Speaker 1: A person who's exercising obviously uses a lot more oxygen
Speaker 1: than that. You can determine how much air is moving
Speaker 1: through your lungs by exhaling into a plastic bag of
Speaker 1: known volume at each breath and seeing how long it
Speaker 1: takes to fill the bag. Do you have any ideas
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