Crunch

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Instructions Preparation Lie supine on floor or mat. Bend knees and hips and place feet on floor. Execution Flex waist to raise upper torso from bench. Keep low back on floor or mat and raise torso up as high as possible. Return until back of shoulders contact padded incline board. Repeat. Comments Certain individuals may need to keep their neck in neutral position with space between their chin and sternum, particularly if hands are placed behing head. See Arm Position During Waist Exercises and Spot Reduction Myth. Also see Curl-up / Half Sit-up Test. Easier Movement can be made easier by placing arms further down away from head as shown. Decondition individuals can start on slight decline board. Harder Exercise can be made more challenging by placing hands further up toward head. See Arm Position During Waist Exercises. Exercise can also be performed on incline board or with additional weight. Incline Crunch

Classification  Utility: Auxiliary  Mechanics: Isolated  Force: Pull Muscles Target Rectus Abdominis Synergists Obliques Stabilizers No significant stabilizers