You can tone the entire front and back side in these two Pilates exercises.
Heel beats strengthen the back from the upper back down through the lower back and the hamstrings. It is also one of the best butt exercises you can do on the mat.
The Pilates bicycle is an advanced Pilates exercise. It strengthens the glutes, abs, hamstrings and opens the hip flexors. It requires tremendous shoulder and pelvic stability as well as hip flexibility.