Exercise Lab

Cross-Arm Rotation Crunch -- Single-Side

View Instructions

Equipment

  • No Equipment Needed

Muscle Groups

  • Abs & Core

Purposes

  • Abdominal strength
  • Side of trunk (Obliques)

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Description

  • Lie on your back with your feet flat on the floor.
  • Cross your arms over your chest.
  • Keeping your neck neutral, roll your upper back off the floor and twist to one side.
  • Return slowly to the starting position.

ProTip

  • Initiate the crunch at the head, then roll your spine up segmentally into a crunch

Mistakes

  • Jutting the chin as you crunch up
  • Not rotating the torso enough