A strength machine designed for exercising the chest muscles and back muscles. The machine has a 9-step pneumatic seat position adjustment. The applied pneumatic actuators allow for easy adjustment of the elements by the trainee without having to leave the device. The structure of the device is made of a flat-oval section with dimensions of 125x60x3. The stack covers are made of sheet metal. The stack is equipped with a magnetic load selector. The upholstery elements have been adjusted to the anatomical shapes of the exerciser, which contributes to the comfort and safety of use.