This exercise increases overall core strength and stability, while focusing on the obliques.
Begin by laying on your back on the BOSU with your feet on the ground and your hands behind your head. The BOSU should be under the curve of the lower back.
Using your abdominal muscles pull your upper body towards your knees, twisting so that your right elbow reaches towards your left knee. Be sure not to use your hands to pull yourself and your head, as this puts strain on your neck and does nothing to work the muscles you wish to target in this exercise. Return to the starting position and repeat, switching sides.
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