Yes, yes, and yes. Because the active sitting allows your spinal reflexes to naturally move and adjust, most users find that their posture immediately improves when they sit down on a QOR360 chair.
Moreover, because the active sitting gently and continuously conditions your core musculature this improved posture over time becomes habitual. Slowly and gradually, active sitting can condition core muscles that may have been ignored in your day to day routine of sitting in a fixed position. Active sitting has been shown in studies to increase your metabolic burn by up to 15%.