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Why the name O2E2?
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Can I incorporate O2E2Ⓡ Machines into my regular exercise routine?
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How many variants of O2E2 machines are available?
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How do I know the unit is working?
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Can an O2E2Ⓡ Machine be self-administered?
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Is there any filter on the machine?
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Do I need to clean any part of the unit?
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Can I replace the plastic water bottle (or humidifier bottle) with a glass bottle?
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Can I cut the 50 feet hose to make it shorter?
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How to remove the odor of the plastic hoses?