Sitting may seem like a simple activity. However, without the right setup, you may gradually begin to slouch, move your head forward, raise your shoulders, or leave your feet unsupported while working.
These habits can make certain parts of the body feel tired more quickly, particularly the lower back, neck, shoulders, wrists, and legs. The problem does not always come from posture alone. Chair height, seat depth, desk height, and monitor placement also affect how you sit.
Correct sitting posture does not mean forcing the body to remain perfectly upright and rigid throughout the day. A good sitting position provides adequate support, keeps the joints in a comfortable position, and allows work equipment to be reached without bending or stretching.
The following steps explain how to sit properly in a chair while working, studying, or using a computer.
What Does Correct Sitting Posture Look Like?
Correct sitting posture is a position that can be maintained without unnecessary tension. The chair and desk should support the body so that the user does not have to rely continuously on muscle effort to hold a particular posture.
A comfortable sitting position generally includes:
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The back resting against the backrest.
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Support for the lower back.
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The head aligned with the body.
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Relaxed shoulders.
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Elbows positioned close to the body.
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Wrists kept relatively straight.
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Thighs supported by the seat.
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Feet resting on the floor or a footrest.
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The monitor placed directly in front of the user.
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The keyboard and mouse within easy reach.
However, this is not a posture that should be held without movement. The body still needs to change position, recline, stand, and walk regularly.
Read also: Ergonomic Sitting Position and Its Effects on Health
9 Steps to Achieve Correct Sitting Posture
1. Sit All the Way Back in the Chair
Begin by moving your body towards the back of the seat. Make sure your buttocks and back are not positioned too far away from the backrest.
Sitting near the front edge removes support from the back. The muscles then have to work harder to hold the body upright, and the user may gradually lean towards the desk.
If the backrest feels too far away, check the seat depth. A chair with a sliding seat allows the depth to be adjusted to suit the length of the user’s thighs.
2. Position the Lumbar Support on the Lower Back
Lumbar support is the part of the chair designed to support the natural curve of the lower back. It should follow the lumbar area rather than pressing against the tailbone or sitting too high on the back.
If the lumbar support is adjustable, change its height and depth gradually. Proper support should feel stable without pushing the body forward excessively.
Do not copy another person’s settings automatically. Back shape, height, and sitting habits vary between users.
Read also: Benefits of Lumbar Support in Ergonomic Work Chairs
3. Adjust the Chair Height to Support the Feet
Raise or lower the chair until both feet can rest securely on the floor. Avoid leaving the feet unsupported, as the front edge of the seat may place additional pressure underneath the thighs.
At the same time, the chair must still match the height of the desk. If you need to raise the chair so that your hands are aligned with the work surface, use a footrest when the feet no longer reach the floor.
Do not lower the chair simply to reach the floor if doing so forces you to raise your shoulders while typing.
4. Adjust the Knees, Hips, and Seat Depth
Position the hips approximately level with or slightly higher than the knees. The feet may sit slightly forward as long as they remain supported.
The seat should support most of the thighs without pressing directly against the back of the knees. Leave a small space between the front edge of the chair and the knee crease.
A seat that is too deep may prevent the back from reaching the backrest. A seat that is too shallow may not provide sufficient thigh support. A sliding seat can help accommodate different leg lengths.
5. Relax the Shoulders and Adjust the Armrests
The armrests should support the arms lightly without pushing the shoulders upwards. Lower the armrests if the shoulders feel raised. If the body leans sideways to find support, the armrests may be too low.
Keep the elbows close to the body. They do not need to form an exact 90-degree angle, but they should remain in a neutral position that allows the hands to reach the keyboard comfortably.
Make sure the armrests do not prevent the chair from moving close to the desk. Lower, slide, or rotate them according to the available adjustments.
6. Keep the Wrists Relatively Straight
While typing, keep the hands aligned with the forearms. Avoid holding the wrists in a position that bends continuously upwards, downwards, or sideways.
Place the keyboard directly in front of the body and keep the mouse close to it. A mouse positioned too far away forces the shoulder and arm to reach repeatedly.
When using a wrist rest, treat it as a resting surface when you pause from typing. Avoid pressing the wrists continuously against the cushion or the edge of the desk.
7. Align the Head and Neck
Keep the head positioned above the shoulders and look forward. Avoid moving the head towards the screen, looking down sharply, or tilting the neck for long periods.
If you repeatedly lean closer to the monitor, check the text size, screen distance, and your vision. Moving the chair closer or increasing the display size may be more effective than continuing to push the head forward.
A headrest can provide support when reclining. However, it should not push the head forward while you are sitting upright and working.
8. Position the Monitor, Keyboard, and Mouse Correctly
Place the monitor directly in front of the user so the neck does not need to remain rotated to one side. Adjust the viewing distance according to the screen size and visual comfort.
The top of the screen can generally be positioned at or slightly below eye level. This helps the user view the main area of the screen without continuously looking down or upwards.
When using a laptop for extended periods, consider adding a laptop stand, external keyboard, and mouse. The screen can then be raised without forcing the hands into an excessively high position.
Read also: How to Set Up Your Sitting Position at a Computer
9. Use the Recline Function and Change Position Regularly
Correct sitting posture does not require the body to remain completely upright. You may recline slightly as long as the back, head, and arms remain supported.
Use the chair’s recline feature to change the body angle between tasks. Adjust the tension so that the backrest follows your movement without feeling excessively loose or resistant.
In addition to changing the chair angle, stand and walk regularly. There is no single sitting position that should be maintained throughout the entire day, even when the chair has been adjusted correctly.
Does Correct Sitting Posture Require Exact 90-Degree Angles?
Not every joint must be kept at an exact 90-degree angle. That measurement is more useful as a starting point for setting up a workstation than as a strict position that must be forced.
A comfortable posture may vary according to body height, proportions, activities, and chair features. For example, a user may recline slightly with a more open hip angle while keeping the back supported.
More important considerations include:
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The shoulders remain relaxed.
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The elbows stay close to the body.
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The wrists are not continuously bent.
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The back receives sufficient support.
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The feet have a stable surface.
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Equipment can be reached without stretching.
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The position can be changed easily.
A posture that is held too rigidly can also become tiring.
A Quick Order for Adjusting an Office Chair
Use the following sequence before beginning work:
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Sit all the way back against the backrest.
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Adjust the chair height according to the desk and hand position.
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Add a footrest if the feet cannot reach the floor.
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Adjust the seat depth.
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Position the lumbar support on the lower back.
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Set the armrests so the shoulders remain relaxed.
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Adjust the headrest for reclining.
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Set the recline angle and tension.
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Move the keyboard and mouse closer.
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Adjust the height and distance of the monitor.
Review the setup when the desk, screen, or type of activity changes. A position that works for typing may not be ideal for reading, drawing, or participating in a meeting.
Common Sitting Posture Mistakes
The following habits may make sitting less comfortable:
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Sitting only on the front edge of the chair.
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Leaning forward to view the screen.
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Leaving the feet unsupported.
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Placing the monitor to one side.
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Setting the armrests too high.
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Keeping the keyboard and mouse too far away.
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Using a low laptop screen for long periods.
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Remaining in one position for several hours.
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Copying another user’s chair settings.
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Using a headrest that pushes the head forward.
Not every discomfort is caused by the chair. Review the desk height, monitor position, working habits, lighting, and the type of activity being performed.
Read also: Incorrect Sitting Posture: Causes of Discomfort and Lower Productivity
PEXIO Products to Support Correct Sitting Posture
An ergonomic chair does not automatically create perfect posture. However, adjustable features allow the chair to fit the user’s dimensions and working requirements more closely.
1. PEXIO Mike Ergonomic Office Chair
The PEXIO Mike Ergonomic Office Chair includes 2D lumbar support, a 2D headrest, 3D armrests, a sliding seat, recline adjustments, and a backrest with multiple height settings.
The sliding seat helps adjust the seat depth, while the lumbar support can be moved vertically and forwards or backwards. These features are relevant for users who need more control over lower-back support and seat length.
2. PEXIO Oxford Ergonomic Chair
The PEXIO Oxford Ergonomic Chair includes 2D lumbar support, 4D armrests, a 2D headrest, a sliding seat, recline adjustments, and a footrest.
Oxford is recommended for users approximately 165–200 cm tall and supports a maximum load of 136 kg. It is also available with foam or mesh seating to accommodate different preferences.
3. PEXIO Anti-Fatigue Footrest
When the feet cannot reach the floor after the chair has been adjusted to the desk, consider the PEXIO Anti-Fatigue Footrest.
A footrest provides a stable surface for the feet. Adjust its position and angle so the feet remain supported without creating unnecessary pressure around the knees or ankles.
Explore other options through the PEXIO ergonomic chair collection, or visit a PEXIO showroom to test the chair adjustments in person.
Frequently Asked Questions About Sitting Posture
What is the correct sitting posture in a chair?
Sit all the way back against the backrest, position the lumbar support on the lower back, relax the shoulders, and make sure the feet have a stable surface. The keyboard, mouse, and monitor should also be arranged so they can be used without leaning forward.
Does the back need to remain upright while sitting?
The back does not have to remain rigidly upright. You may recline slightly as long as the back stays supported and the head is not pushed too far forward.
What should I do when my feet cannot reach the floor?
Adjust the chair according to the desk height and hand position first. If the feet still cannot reach the floor, add a footrest to provide a stable surface.
How long should I remain in one sitting position?
There is no single duration suitable for everyone. Change position, recline, stand, or walk regularly rather than waiting until the body feels very stiff.
Adjust the Chair to the Body, Not the Other Way Around
Correct sitting posture involves more than simply sitting upright. The back, arms, thighs, and feet need proper support, while work equipment must remain within a comfortable reaching distance.
Begin with the seat height and depth, then adjust the lumbar support, armrests, headrest, and recline. Afterwards, arrange the desk, monitor, keyboard, and mouse as one complete workstation.
Most importantly, avoid holding one posture for too long. Use the chair’s adjustments to vary your position and include regular movement throughout the day.
Explore the PEXIO ergonomic chair collection to find options that match your height, working needs, and sitting preferences.
