A 19-Minute HIIT Workout for Beginners - The New York Times

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HIIT (High Intensity Interval Training), The Nutrition Source

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The 20-Minute Workout - The New York Times

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A 19-Minute HIIT Workout for Beginners - The New York Times

Combat HIIT 4-Class Package By Coach Jeric Pantaleon

A 31-day Walking and Strength Training Workout for Beginners

A 15-minute full body HIIT workout — no equipment required