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Instead of just swinging your legs up and down on a flat bench, try switching to an incline for your leg raises. This puts you in a better position to hit the abs—which, by the way, you only do if you add spinal flexion to the movement. So instead of relying on the hip flexors to drive the movement, make sure to curl the spine during the contraction to really hit the abs. If an incline position makes this too difficult, you can still do lying leg raises on a flat bench with an added posterior pe

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