obliques

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  One-leg front plank

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  Twisting hyperextension

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  Cable wood chop

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  Captain’s chair leg and hip raise

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  Stability ball jackknife

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  Standing ab wheel rollout

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  Bent-over one-arm cable pull

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  Dumbbell side bend

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  Stability ball side bend

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  Lying bent-knee oblique twist

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  Machine leg raise crunch

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  Hanging straight leg raise