The Bull Parallels are the ideal app for those who want to train with free body, emphasizing the work on the upper body. Thanks to their divergent structure, it is possible, depending on where you are, to displace the work in different muscle areas. For example, by performing dip during the execution phase, the more you go towards the attack of the structure, the greater the effort on the triceps, moving away from the center, the focus shifts more on the pectorals. Thanks to the adjustable height it is also possible to perform pulling exercises such as tight grip tractions or, supine traction, if you work by varying the inclinations. Indispensable app for those who practice Calisthenics, Crossfit and Functional Training.