by Aaron Hewitt PA-C, Physician Assistant OrthoCarolina’s Sports Medicine CenterYou’ve likely heard of high-intensity interval training (HIIT), a type of workout that isn’t totally new, but is increasingly popular and can be confusing because there are so many types.Usually short in duration, the HIIT intervals incorporate intense periods of work followed by low-intensity segments or rest, increasing both your aerobic and anaerobic capacity. Whether it’s CrossFit, P90X, Insanity, Tabata training, Jillian Michael’s 30 Day Shred or any other variation, these workouts can seem intimidating or downright scary if you’ve never tried one. Can I physically do the exercises and keep up with everyone?

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Understanding HIIT. When it comes to exercise, can less actually be …

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