Dell Precision Workstation 450 User Manual page 258

• When sitting, make sure the weight of your legs is on your feet and not on the front of
your chair seat. Adjust your chair's height or use a footrest, if necessary, to maintain
proper posture.
• Vary your work activities. Try to organize your work so that you do not have to type for
extended periods of time. When you stop typing, try to do things that use both hands.
For more information about ergonomic computing habits, see the BSR/HFES 100 standard,
which can be purchased on the Human Factors and Ergonomics Society (HFES) website at:
www.hfes.org/publications/HFES100.html
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