If you have ever stood up from your desk feeling stiff, sore, or like your body has aged ten years in eight hours, you are not alone. Traditional office chairs are designed to hold you in one position, but your body is designed to move. Active sitting is the solution.
What is active sitting?
Active sitting means using a chair that encourages constant micro-movement rather than locking you into a single posture. Instead of relying on a rigid backrest and fixed seat, active sitting chairs use unstable or semi-stable surfaces that engage your core muscles, promote spinal mobility, and keep blood flowing throughout the day.
The concept is simple: your spine thrives on movement. When you sit still for hours, the intervertebral discs lose hydration, the supporting muscles weaken, and pressure concentrates on the same points. Active sitting distributes that load dynamically.
Static sitting vs. active sitting: what happens to your spine
The infographic above illustrates the fundamental difference. In a traditional chair (left), the closed 90-degree hip angle compresses the lumbar discs unevenly, leading to fatigue, stiffness, and long-term degeneration. In an active sitting position (right), the open hip angle of approximately 135 degrees maintains the spine's natural lordotic curve, distributes pressure evenly, and engages the stabilising muscles.
How does a saddle chair work?
The most popular active sitting chair is the HÅG Capisco, which uses a saddle-shaped seat inspired by horseback riding. When you sit on a saddle, your thighs angle downward, opening the hip joint to around 135 degrees. This forward pelvic tilt naturally positions the spine in its optimal S-curve without any mechanical lumbar support.
The Capisco also features a balanced movement mechanism that allows you to rock forward, backward, and side to side. You can sit facing forward, perch on the front edge, or even sit reversed, leaning against the backrest like a fence rail. This variety of positions keeps your body engaged and prevents the fatigue that comes from static loading.
Benefits of active sitting
| Benefit | Why it matters |
|---|---|
| Reduced back pain | Dynamic loading prevents pressure concentration on lumbar discs |
| Stronger core | Subtle balancing engages deep stabilising muscles all day |
| Better circulation | Constant micro-movement promotes blood flow to the legs |
| More energy | Movement stimulates alertness and reduces afternoon fatigue |
| Improved posture | Open hip angle naturally maintains spinal curves |
| Sit-stand flexibility | Saddle chairs adjust to standing desk height |
Who should try active sitting?
Active sitting is ideal for: people who fidget in traditional chairs, anyone with lower back stiffness, creative professionals who change posture frequently, and those who use sit-stand desks (the Capisco transitions seamlessly between sitting and standing heights).
It may not suit: people who need firm, consistent lumbar support due to specific spinal conditions, or those who prefer to recline deeply while working.
Ready to try it?
The HÅG Capisco 8106 is the world's most popular active sitting chair, available from Chair Dinkum with free delivery across Australia. For a more traditional look with active sitting principles, the Capisco Puls 8010 offers a streamlined alternative at a lower price point.
Browse our full HÅG range or get in touch for advice on which model suits your setup.
