Lumbar support is important because it promotes good posture and reduces stress on the back, leading to pain. A chair with lumbar support fills in the space between the natural inward curve of your lower back and the chair. On chairs without lumbar support, this part of the lower back is supported only by the muscles, tendons, and spine located in the area without any help from the chair. Chairs with lumbar support have a bar within that lower back section of the chair that bends with the natural inward curve of your lower back, maintaining contact and reducing the weight burden placed on this section of your back. This increases the chair’s comfort and reduces pain and tension, especially when sitting for extended periods of time. It encourages good posture, prevents back problems from getting worse, and can help reverse existing back issues.