The initial focus should be on your seating posture. When properly seated in an ergonomic chair, you can avoid neck fatigue altogether. An improperly set up headrest is more likely to cause neck pain than alleviate it. Let's address this step by step.

1. Begin by lowering the gas lift until your feet rest flat on the ground.

2. Adjust your desk height to match the chair's level.

3. Sit back in the chair, ensuring your tailbone contacts the back. If the back of your knees touches the front of the seat pan, consider adjusting the seat depth, or trying a smaller-sized chair.

4. Keep your entire back in contact with the chair's back.

5. Completely unlock the chair's tilt adjust, allowing free movement from forward to back.

6. Adjust the tilt tension to suit your preferred working posture—striking a balance that keeps you comfortably upright when typing. Yet, if you lift your arms and place them behind your head, the nuanced weight distribution should effortlessly enable you to lean back without requiring exertion from your feet or back. Movement plays a crucial role in maintaining ergonomic health.

When it comes to lumbar support, many people mistakenly think it should push against their lower back. However, the purpose of lumbar support is to apply equal pressure across your lumbar region, just like the rest of the chair supports the rest of your back. This equal pressure distribution helps maintain a balanced and comfortable sitting posture. Some ergonomic chairs offer the option to remove the lumbar support or adjust it in a way that is barely felt, as it is not necessarily needed for everyone. Adjust the lumbar pad so that it provides this balanced support, rather than pushing firmly against your lower back.

Utilize armrests to support your forearms, align them with the worktop height, and position your keyboard at the desk's edge. For those who prefer a farther keyboard position, tuck your chair under the desk, covering your forearms and allowing the desk to mimic armrest support.

Now, addressing why you might be sitting poorly: Your monitor is likely too far away, leading to strain as you lean forward. When sitting correctly, you should be able to touch the monitor without leaving the chair. Resist the initial urge to push it back; live with the proximity for a week before making adjustments.

For active sit-to-stand users, the tuck-in method may maintain the monitor's ideal position for both sitting and standing, reducing the need for constant adjustments during transitions.

Avoid standing for extended periods, as studies suggest one hour of static standing can lead to back pain. While being on your feet for 8 hours won't harm you if you move around, standing in one place without breaks can be problematic. Introduce movement into your routine to prevent pain, whether sitting or standing.

Once correctly configured for your body, including adjustments for desk and chair height, tilt tension, armrest positioning, and lumbar support, an ergonomic chair can offer a tailored, supportive, and comfortable seating experience.