Ab Twist - Gethin Variation

The cross-body sit-up is a bodyweight exercise targeting the ab muscles, the obliques and rectus abdominis or "six-pack" muscles in particular. It involves bringing the opposite-side knee and elbow together, usually alternating sides with each rep. It can be performed for time or reps as part of the ab-focused portion of any workout.


  1. Builds the rectus abdominis and the obliques
  2. Can be performed with feet anchored or unanchored
  3. Builds both strength and muscle definition
  4. No equipment required
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Ab Twist - Gethin Variation Images


Ab Twist - Gethin Variation Instructions

Ab Twist - Gethin Variation muscle diagram