If you've ever wondered what it might be like to train with The Biggest Loser trainer Bob Harper, check out this clip of Alison Sweeney's appearance on the Bonnie Hunt Show. Sweeney, host of The Biggest Loser and soap opera actress, says Harper pushed her farther than she's ever gone before — almost to the point of tears!


Do you push yourself when working out? When's the last time you've done sprints in your cardio routine?


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