Abstract: A chair is provided that functions well as an ordinary office chair, and which can be used to perform exercises. The chair includes all the attributes of a comfortable office chair, including a padded seat with a seat bottom and seat back, and a pedestal with casters that rollably support the seat on a chair pad lying behind an office desk. The seat back (18, FIG. 1) has an upper part (32) with extendable handles (34, 36) that can be grasped to raise and lower it while a mechanism resists vertical movement to provide exercise. The seat has armrests (100, 102) that each have a moveable portion with extendable handles (114) and a resistance mechanism (115) to provide exercise in raising and lowering the armrests. The chair also has an extendable mechanism (140) mounted under the seat bottom and having a pair of foot handles (150, 152) that allow the seated person to move the handles forward and back for further exercise.