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Ill effects of poor posture more than just physical

Those who lean forward while sitting may be inclined to clench their jaws and tighten their facial muscles, causing headaches.

New York

A DISTRAUGHT wife begged me to write about the importance of good posture. "My husband sits for many hours a day slouched over his computer," she said. "I've told him repeatedly this is bad for his body - he should sit up straight - but he pays no attention to me. He reads you