Toshiba 2455 S305 Satellite 2455-S305/S306 User's Guide (PDF) - Page 46

46 Getting Started Selecting a place to work If you are using a conventional chair: ❖ Your knees should be slightly higher than your hips. If necessary, use a footrest to raise the level of your knees and ease the pressure on the back of your thighs. ❖ Adjust the back of your chair so that it supports the lower curve of your spine. If necessary, use a cushion to provide extra back support. Lower-back-support cushions are available at many office supply stores. ❖ Sit with your back straight so that your knees, hips, and elbows form approximately 90-degree angles when you work. Do not slump forward or lean back too far. Lighting Proper lighting can improve the visibility of the display and reduce eyestrain. ❖ Position the display panel or external monitor so that sunlight or bright indoor lighting does not reflect off the screen. Use tinted windows or shades to reduce glare. ❖ Avoid placing your computer in front of a bright light that could shine directly in your eyes. ❖ If possible, use soft, indirect lighting in your computer work area. Arms and wrists ❖ Avoid bending, arching, or twisting your wrists. Keep them in a relaxed, neutral position while typing.