On page 110 my book, The New Rules of Posture, there’s a sidebar about coughing. I’ll quote it here, to save you the trouble of looking it up. “The relationship between your diaphragm, pelvic floor, and core support is graphically demonstrated in the act of coughing (or laughing for that matter). If you cough with your pelvis rolled back, you’ll feel a tendency to puff out your belly and bear down into your pelvic floor. If you cough while sitting in a slight forward pelvic tilt, you won’t feel the same pressure on your bladder…