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	Podcast:		BrainStuff
	Episode:		Why can't a couch potato run a marathon?
	Category:		Science & Medicine
	Duration:		00:04:05
	Publish Date:		2014-12-03 14:00:00
	Description:		Intuitively, it makes sense that a trained athlete can run a marathon easily, while a "couch potato" can barely run a mile. But what's the biology behind it? Find out how fit and unfit bodies respond to exercise in this episode. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.
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