Posture & Positioning
What should your back rest against while using a computer?
The backrest of a chair.
What does the 20-20-20 rule mean?
Every 20 minutes, look at something 20 feet away for 20 seconds
Why is it important to take breaks when using a computer?
To reduce strain and prevent injury
How should your feet be positioned while seated?
Flat on the floor or on a footrest.
How far should your screen be from your eyes?
About an arm’s length away
How often should you take a break from the screen?
Every 20–30 minutes
What angle should your elbows be while using the keyboard and mouse?
Bent at 90 degrees and close to the body
What kind of lighting should you avoid to protect your eyes while using a screen?
Glare and very bright lights
What can happen to your muscles if you don’t take breaks?
Muscle fatigue and poor circulation
How should your knees be positioned when sitting properly?
Level with or slightly lower than your hips
What can happen if you look at a screen too closely or for too long without breaks?
Eye strain and headaches
Name two exercises you can do during a break from the computer.
Stretch your arms and legs, take a short walk
Name three things that make up a good sitting posture.
Back straight and supported by the chair
Feet flat on the floor or on a footrest
Elbows bent at about 90 degrees and close to the body
Name two screen adjustments that help reduce eye fatigue.
Brightness and contrast adjustments; changing screen angle
How do regular breaks help your body and mind during computer use?
They help muscles recover, improve focus, and prevent injuries