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Computer screen angle

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Chin Posture

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The top of your screen monitor should be at eye level and be about 0.7 m away from you.  Set the distance between your eyes and the screen so that you can focus on the screen easily. Usually this will be within an arm's length.  Adjust the brightness and contrast of the screen to a level that is comfortable for you.

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Head Posture

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Remember to place the keyboard in a position that allows your forearms to be close to horizontal and your wrists to be straight; that is, each hand should be in line with the forearm.  If this causes your elbows to stick out, away from the side of your body, you should re-check the height of the work surface.  Your computer keyboard should be sloping at about five degrees

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You should ensure your chair is ergonomically designed to adjust to your requirements. Well-adjusted chairs will improve your body position, improve your blood circulation, reduce muscular effort and decrease pressure on your back. Make sure that your chair is adjusted to suit your requirements (a gas lift chair is best for this). Your back should be straight and your feet should be flat on the floor or on a  footrest.
You should be able to adjust your chair to ensure:  Your feet can rest comfortably on the floor or on a footrest
the seat slope is level or slightly forward so that the blood flow to your legs is not restricted the height and angle of the back rest support your lower back

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Step 3 When carrying files, binders, and additional items, consider putting them in a separate case to balance the load.

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Step 2
Carry your laptop in a wheeled case or a backpack with wide, padded shoulder straps and a sturdy hip belt. If this doesn’t appeal to you, switch hands or shoulders frequently when using a carrying case with a handle or shoulder strap.

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The weight of a laptop and accessories can add up! Here are some ways to reduce the wear and tear on your body when trans- porting your laptop:
Step 1 Lighten your load by purchasing a lightweight laptop. Reduce the weight in your carrying case by removing unnecessary items, such as drivers, battery packs and cables.

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Plant feet firmly on floor or - if not possible - use a foot stool. Keep thighs parallel to floor.Ensure leg clearance from table or keyboard tray to avoid bumps, scratches, pinches, and torn clothing

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Use a chair that provides lumbar (lower back) support - if adjustable, adjust to maintain an erect sitting posture. Ideal chairs can be easily raised or lowered, and have 5 wheel legs for safetyKeep feet planted firmly on floor or footstool to counterbalance forces on lower back

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Position monitor, keyboard, and chair in straight line. Top of monitor screen at or slightly below the eye horizon. Comfortable, non-straining distance to read monitor. (typically 15-30 inches) Adjust brightness, contrast, and color to comfortable levels. Avoid glare by positioning away from windows and direct lights. Keep written work materials propped up near monitor screen.