The Economy H-PND is great for hyperextensions, which tone your glutes and hamstrings. Hyperextensions can also help increase the flexibility of your hips. With the Economy H-PND, you can practice cross-training, strength training, and weight lifting - with 100-pounds less overall weight than our larger version. By simply changing the steel tubing from 3 x 3-inch to 2 x 2-inch, we used less material without sacrificing this unit's integrity, stability, and function. Tighten and tone your muscles with the Economy H-PND. This machine allows you to target your lower back, glutes, legs, hamstrings, and calves, helping you to develop a lean, muscular build.