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High-Intensity Interval Training Gains Popularity

Like fashion, food and almost everything else, fitness programs come - and go - in popularity.  This year, the American College of Sports Medicine predicts high-intensity, interval training, known by the acronym HIIT is poised to take the top spot. In a work-out room, a dozen exercisers use different pieces of equipment.  Whether it's a weighted ball, the treadmill, a rowing machine, or a stationary bike, they work as hard as they can for one minute. After a 15-second...

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