Abstract: The object of the present invention is a chair characterized in that this chair can be quickly converted into a couch, by causing the back (2), the seat (3), and the foot-rest (4) thereof to be moved on to the same horizontal plane, so that tanning apparatus (31, 36, 41, 42, 43) for tanning both the body and the face and the hands of a user, can be advantageously associated therewith.The chair according to the invention is provided with an articulated skeleton (1) for supporting the back (2), the seat (3), and the foot-rest thereof. The skeleton (1) has such linkages and kinematic connections that an uncomfortable sliding movement of a user sitting on the chair is avoided, when the angular position of the chair is being changed.The chair according to the invention, further comprises mechanical massage means (22) which are incorporated into its back (2), and means for a passive gymnastic exercise.