Abstract: A glute rebuilding device comprising a main body, at least one slide, and a support. The main body has an upper portion and a lower portion. The upper portion has a top and bottom surface and a first and second end, the second end having a foot rest extending therefrom. The lower portion has a top and bottom surface and a first and second end. The slide is coupled to the bottom surface of the lower portion of the main body. The support is configured for placement between the upper and lower portions of the main body to elevate the upper portion with respect to the lower portion. The second end of the upper portion is pivotally connected to the second end of the lower portion by a hinge, such that the upper portion can move between a flat position, an elevated position, and an unfolded position.