Monday, January 7, 2013 4:00 pm

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It may take a little more motivation to complete workouts in the winter in the great outdoors than other times of the year

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Monday, January 7, 2013 4:00 pm - Yahoo! News

- January 7th, 2013

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Reuters - January 7th, 2013

Reuters - January 7th, 2013

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Reuters - January 7th, 2013