A mechanism for a zero-gravity reclining chair enables the zero-gravity reclining chair to achieve different positions, states, or modes, including a seated position, state, or mode, a standing position, state, or mode, a TV position, state, or mode, and a reclining position, state, or mode. The mechanism includes left and right-side linkage systems, as well as first and second linear actuators for moving the linkage system and chair components between the different positions, states, or modes. When the zero-gravity reclining chair is disposed at its reclining position, state, or mode, the backrest portion of the zero-gravity reclining chair is disposed at an elevational level which is the same as, or slightly below, that of the footrest portion of the chair so as to provide the occupant of the zero-gravity reclining chair with enhanced health effects.