US Patent 9925410 Exercise wedge

A portable exercise device designed to efficiently and safely target and isolate the gluteal, hamstring and calf muscles, which are the posterior muscles of the lower body, while limiting the use and over training of the quadriceps (thigh) anterior muscles of the lower body. The exercise device is an inclined platform with an additional raised support, providing resistance originating from within the platform, which optimizes the eccentric phase of every squat and lunge for maximal strength and hypertrophy of the muscles. The combination of the inclined platform with additional raised support places the user into an optimal position for exercising the posterior muscles of the lower body.