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If You Don't Like Running, Try This 25-Minute Low-Impact Intense Cardio and Ab Workout
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High Knees

  • Run in place while lifting your knees high to the level of your waist. Engage your abs as your knee comes up.
  • Pump your arms to warm up your upper body.
  • Each time your foot makes contact with the ground, that counts as one repetition.
  • Beginners should complete 20 reps, and intermediate/advanced levels should complete 30 reps.
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