Prevent strain from desk work and device use.
keep ears aligned over shoulders, not jutting forward
bring the device to eye level instead of bending the neck
set desk surface to slightly below elbow height
leave a 2-3 finger gap between the seat edge and the back of the knees
keep keyboard flat or slightly negatively tilted to avoid wrist extension
keep knees at or slightly below hip level at a 90-degree angle
keep shoulders relaxed and pulled back, not hunched
place reference papers between the keyboard and monitor
keep the mouse close to the keyboard to prevent reaching
position monitor to avoid reflections from windows or lamps
keep elbows at roughly a 90-degree angle
every 20 minutes, look 20 feet away for 20 seconds
keep wrists straight and neutral, not bent
maintain the natural inward curve of the lower spine
place screen about an arm's length away
reduce stiffness from long sitting sessions
keep feet flat on the floor when seated
keep the top of the screen near eye level