ATHENS, OH—In a stunning display of medical prowess, the no-nonsense nurse Mary-Jo McMann made quick work of a patient's medical chart on Thursday. Her secret? A simple pinch of arm flab. Patient Alison Firestone recounted how McMann, upon entering the examination room, grabbed a chunk of her arm and almost instantly filled out the chart with details of her family background and medical history. Remarkably, McMann didn't even need Firestone to step on a scale, yet somehow knew her blood pressure was a perfect 120 over 80. Perhaps the most surprising part? The arm pinch came with a $3,000 bill.