Failing at the Gym? This App Helps

A new app called FitStar uses real information about your body to eliminate intimidating workouts that lead to broken resolutions, Geoffrey Fowler writes.



from WSJ.com: US Business http://online.wsj.com/article/SB10001424052702304137304579290631043862634.html?mod=pls_whats_news_us_business_f

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