The device is composed of a structure that comprises four inter-hinged modules (1-2-3-4), which enables multiple mounting possibilities thereof. Each module is formed of two essentially straight lateral bars (15-15′) that incorporate a pair of inwardly curved sections (17), which act as links between the two lateral bars in such a way that the end of each module ends in a pair of legs in the form of forks (18), which in turn end either in support legs (19) of the device, or in a hinging means (16), it having been provided that a series of adjustable and non-essential crossbars (20-20′-20″) are subject to being inserted into place in a center of the frame defined by the lateral bars (15-15′). The device is complemented by a series of accessories that make it possible to significantly increase the diverse types of exercises that may be carried out with the same.