An exercising assembly for fitness training and rehabilitation includes a first base, which is positionable on a substantially horizontal surface. An engagement module is selectively engageable to the first base so that the engagement module is positioned proximate to a first end of the first base. A plurality of attachment elements is engaged to the first base, the engagement module, and to a plurality of tensioners. The attachment elements are selectively mutually couplable. A plurality of first interface elements is selectively engageable to the engagement module. Respective attachment elements of the plurality of attachment elements are engaged to each of the first interface elements. Respective tensioners thus are extendable between a respective first interface element and one or more of the first base and the engagement module. The respective tensioners provide resistance to the user moving the first interface elements.