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Keep Moving

Jessica takes a stroll with daughter Maxwell to fit in a workout. Another of Harley's tips: invest in a fitness tracker or pedometer so you make sure you take at least 12,000 steps every day in order to "burn fat all day," he says.

Read More Best Of 2014 LivingWeight WatchersBest Of 2014Celebrity FitnessHarley PasternakJessica Simpson