Why hit the gym when you can go for HIIT anywhere! HIIT is short for High Intensity Interval Training, one of the latest trends in fitness. The nature of HIIT is short, intense spurts of exercise, followed by brief, occasionally active, periods of recovery. We’ve provided some of our favorite routines for doing a HIIT circuit outside, HIIT routines on stairs and a full-body HIIT cardio routine. 

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