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HomeFitnessWorkouts Pin-Worthy Pin: The Sciene Behind HIIT Training Pin-Worthy Pin: The Sciene Behind HIIT Training July 23rd, 2012 HIIT. Sure, you have probably heard some rumblings about adding HIIT to your workouts. But what exactly is HIIT? HIIT, or high-intensity interval training, is touted as one of the most effective fat burning tools out there.

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Pin-Worthy Pin: The Sciene Behind HIIT Training | Skinny Mom …

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