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Correct posture
What the correct posture to use wuen at the computer? I usually try to keep my back straight but It usually stars husting anyway, and I sometimes get numbness, goosebumps in my hands when type for to long, al;so just by using the mouse sometimes. Should I by one of those wrist cusion thing? oh and I remember reading somewhere that your arms should be bent at 90 degrees when at the computer, is this true?
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