NOVELTY - The machine has a pair of lateral frame bars (9) positioned at right and left edges of a chair. A pair of foot pedals (29, 30) is coupled to one of two pedal shafts (27, 28). The pedal shafts are coupled to one of two external arms (25) that are coupled to a puller bar (15). The puller bar is coupled to a pusher lever (13) that is coupled to a pusher bar (11). The pusher bar is coupled to a lateral frame bar, and the movement of foot pedals causes alternating up and down movement of the lateral frame bar and rolling of a chair backrest (6).    USE - Exercise machine for use in a health club, gymnasium and household, for providing a total body workout by exercising legs, back, shoulders, obliques and abdominal muscles.    ADVANTAGE - The machine's backrest rolls are in phase with movement of the legs, thus allowing a user to sit in a comfortable and secure position. The machine supports the spinal column during workout. The movement of the pedal efficiently powers machine's electronics and maintains battery's charge. The machine enables simultaneous exercising of lower and upper body in a safe and continuous manner, thus increasing the degree of workout. The continuous balance afforded by the machine reduces stress and enables the user to concentrate on the workout. The load can be adjusted to all levels. The machine enables adjusting the headrest for the user to rest his/her head on the headrest while exercising to avoid strain in the neck muscles. The machine utilizes hand accessories to increase the user's upper body movement while maintaining the pelvic tilt position. The rolling of the backrest in phase with the leg movement makes the foot movement much more comfortable and harmonic, thus avoiding stress and making workout sessions pleasant for the user. Inertial resistance of the machine is very low as the components displaced are compact and light, thus reducing the muscular strain required to initiate the pedaling movement. The machine minimizes the risk of injury.    DETAILED DESCRIPTION - The machine's backrest rolls is in phase with the movement of the legs, thus allowing a user to sit in a position that is comfortable and secure. The machine continuously supports the spinal column during workout. The movement of the pedal efficiently powers the machine's electronics and maintains the battery's charge. The machine enables simultaneous exercising of lower and upper body in a safe and continuous manner. The machine enables the user to perform a full body, low-impact exercise routine in less time, and with enhanced safety in view of the firm and continuous support offered during all phases of the movement. The continuous balance afforded by the machine reduces stress and enables the user to concentrate on the workout. The load can be adjusted to all levels. The machine adjusts the headrest for the user to rest his/her head on the headrest while exercising to avoid unnecessary strain in the neck muscles. The machine utilizes hand accessories to increase the user's upper body movement while maintaining the pelvic tilt position for increasing the degree of workout. The rolling of the backrest in phase with the leg movement makes the foot movement much more comfortable and harmonic, thus avoiding undue stress and making longer workout sessions more pleasant for the user. The straight movement of the pedals provides freedom to the user for deciding the depth of the pedaling movement at any moment. Inertial resistance of the machine is very low as the components displaced are compact and very light, thus reducing the muscular strain required to initiate the pedaling movement. The machine minimizes the risk of injury.    DESCRIPTION OF DRAWING(S) - The drawing shows a front right perspective view of an exercise machine with contents of a mechanical and electronic systems box covered.    Electronic systems box (1)    Frame (2)    Chair backrest (6)    Frame bar (9)    Pusher bar (11)    Pusher lever (13)    Puller bar (15)    External arm (25)    Pedal shafts (27, 28)    Pedals (29, 30)