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Compatible with

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Reverse Crunch

The reverse crunch is a bodyweight core exercise targeting the lower abs.

  • 45 secDuration
  • 1 × 15Reps
  • No equipmentEquipment

Muscles Targeted

  • Core

How to Perform

  1. Lie on back, knees bent.
  2. Lift legs, hips off floor.
  3. Pull knees towards chest.
  4. Slowly lower hips and legs.
  5. Repeat with control.

Common mistakes

  • Moving too quickly — use a slow, controlled tempo.
  • Using more range than you can control — shorten the movement if your form changes.
  • Holding your breath — breathe steadily throughout the exercise.

Pro tip

Start with a comfortable range and prioritise control over speed or distance.

How Kai uses this exercise

Kai adjusts the duration, reps, and difficulty using your form score and session feedback.

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Variations & Alternatives