The recliners are very simple to use, and they can be adjusted very easily. Most of the recliners have a locking mechanism that locks the chair in a reclined position to give the best zero gravity experience. After using the chair, the lock can be removed so the chair can be put back into an upright position. Most of the zero gravity recliners come with a manual that explains how to use the chair.  Next, the massage recliners come with remotes, so all you have to do is to press the button to change the angle.