6 Low-Impact HIIT Workouts That Won't Hurt Your Back, Knees or Ankles

High-intensity exercise doesn't need to be high-impact. Here are six low-impact HIIT workouts that'll burn serious calories and build muscle — no jumping required.

Body-Weight HIIT Workout You Can Do With No Equipment

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Body-Weight HIIT Workout You Can Do With No Equipment

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15-Minute Pilates Workout for Beginners: No Equipment Needed

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A 20-Minute Beginner HIIT Workout for People Over 50