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162 | HP Jornada H/PC User’s Guide
Reducing eye strain
Have your eyes checked on a regular basis and ensure your
eyeglass prescription is suitable for working on a computer
screen. Look away from the screen from time to time. Focus
on distant objects briefly. Blinking periodically helps to
lubricate the eyes.
Preventing muscle stiffness
Avoid holding your muscles tense for long periods of time.
Keep your fingers and body relaxed. Changing tasks
frequently helps prevent muscle stiffness. Alternating
between typing, writing, filing, and moving around in your
work environment helps to keep muscles loose.
Taking frequent short breaks
When you are required to work on your computer for pro-
longed periods of time, take short breaks frequently. As a
general rule, a 5- and 10-minute break every hour is a good
idea. It is better to take short breaks frequently than longer
breaks less frequently. Data shows that people who work for
long periods of time without a break are more prone to injury.
Occasionally stretch the muscles in your hands, arms,
shoulders, neck, and back. You should stretch at least once
an hour.