A strength machine designed for exercising both straight and oblique abdominal muscles. The cooperating muscle group is the external oblique muscle and, as an auxiliary, the dentate anterior muscle. 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 the ability to adjust the position of the rollers for exercising oblique muscles (left and right) or straight abdominal muscles. 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%.