Apple MC372LL/A Laptop User Manual


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73Chapter 5 Last, but Not Least
Changehandpositionsoftentoavoidfatigue.Somecomputerusersmightdevelop
discomfortintheirhands,wrists,orarmsafterintensiveworkwithoutbreaks.Ifyou
begintodevelopchronicpainordiscomfortinyourhands,wrists,orarms,consult
aqualiedhealthspecialist.
External Mouse
Ifyouuseanexternalmouse,positionthemouseatthesameheightasthekeyboard
andwithinacomfortablereach.
Chair
Anadjustablechairthatprovidesrm,comfortablesupportisbest.Adjusttheheight
ofthechairsoyourthighsarehorizontalandyourfeetareatontheoor.Thebackof
thechairshouldsupportyourlowerback(lumbarregion).Followthemanufacturer’s
instructionsforadjustingthebackresttotyourbodyproperly.
Youmighthavetoraiseyourchairsothatyourforearmsandhandsareattheproper
angletothekeyboard.Ifthismakesitimpossibletorestyourfeetatontheoor,you
canuseafootrestwithadjustableheightandtilttomakeupforanygapbetweenthe
oorandyourfeet.Oryoucanlowerthedesktoptoeliminatetheneedforafootrest.
Anotheroptionistouseadeskwithakeyboardtraythat’slowerthantheregularwork
surface.
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