During the study, by researchers at Colorado University, five healthy men aged 25-31 lived in a sealed off room for three days so their oxygen, carbon dioxide and water levels could be monitored in order to see how many calories they burned.
linkDuring the study, by researchers at Colorado University, five healthy men aged 25-31 lived in a sealed off room for three days so their oxygen, carbon dioxide and water levels could be monitored in order to see how many calories they burned.
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