I've had to resort to using my legs once or twice, right now the hair on my arms has mostly grown back from the last sharpening.
Remember that you need to test for sharpness on both arms. If you only do one arm, you're only testing one side of the edge, which could just be a burr. I've found it best to make sure the edge shaves equally well on both sides.
Really wish you hadn't told me this, Joshua J.