A strength machine designed for exercising the biceps muscles in a sitting position. 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 machine has a 7-step pneumatic seat position adjustment. The applied pneumatic actuators allow for easy adjustment of the elements by the exerciser without having to leave the device. The stack is equipped with a magnetic load selector. The upholstery elements have been adapted to the anatomical shapes of the exerciser, which contributes to the comfort and safety of use. An additional advantage is the unique BWT load transfer system, which protects against injuries resulting from muscle overload, and also ensures an increase in the effects of the exercise up to 30%.