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Drop What You're Doing — This 15-Minute Full-Body HIIT Workout Requires ZERO Equipment
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1

Standing Crunch

  • Stand with your feet hip-distance apart and your arms up, hands close to your temples like you would in a regular crunch on the floor.
  • Drive your right knee up as you bring your left elbow down across your chest to meet your knee.
  • Return to your starting position and do the same with your other side. This counts as one rep.
  • Repeat, continuing for 30 seconds. Then rest for 20 seconds.
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