Sony VGC-JS155J/P User Guide - Page 10
Ergonomic Considerations
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Ergonomic Considerations Whenever possible, you should attempt to take account of the following ergonomic considerations: n 10 N Before Use ❑ Position of your computer - Place the display directly in front of you (1). Keep your forearms horizontal (2), with your wrists in a neutral, comfortable position (3) while using the keyboard, pointing device, or external mouse. Let your upper arms hang naturally at your sides. Take frequent breaks while using your computer. Excessive use of the computer may strain eyes, muscles, or tendons. ❑ Furniture and posture - Sit in a chair with good back support. Adjust the level of the chair so your feet are flat on the floor. A footrest may make you more comfortable. Sit in a relaxed, upright posture and avoid slouching forward or leaning far backwards.