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Cross-Arm Sit Up

Cross-Arm Sit Up

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Muscle Groups
  • Abs and Core
  • Hips & Buttocks
  • Abdominal strength


The cross arm sit up is a more challenging version of the cross arm crunch. You are moving through a greater more range of motion and are thus doing more work. Once you have a base level of strength you can perform this exercise. This cross arm sit up is a great way to strengthen your core and build you six-pack.


  • Lie on your back with your legs bent and feet flat on the floor.
  • Cross your arms over your chest.
  • Keeping your neck neutral, roll your upper back off the floor.
  • Return slowly to the start position.


  • Jutting the chin as you sit up
  • Not sitting up all the way