Virtual reality (VR) has been a promising technique to provide an immersive experience. Comparing to traditional multimedia, when users want to take a rest or change the position such as sitting down, the chair might not be sittable because of the inconsistency between the physical and the virtual chair. In this work, we utilized a tracker attached to a physical chair and conducted a user study to explore the sitting behavior when they interact with different forms of the virtual chair. Results indicate that visualizing each part of the chair could provide different information and affect trust and preference.