The Single Leg Stretch is a Classical Pilates exercise. The Single Leg Stretch is the first exercise in the Ab Series of Five. Breathwork plays an important part in performing this exercise. This exercise stretches the hips while challenging stability. Begin by lying on the Mat, hugging your knees into your chest. Lift your head and shoulders off the Mat, keeping one knee in as you extend the other leg out to 45 degrees. Place the inside hand on your knee and the outside hand on your ankle. Pull your leg into your chest while lengthening the other leg in opposition and then switch. Exhale as you pull your leg into your chest and inhale when changing legs. For an added challenge, lower the extended leg closer to Mat and inhale for one set, then exhale for one set. This exercise can also be performed with a Magic Circle in hands overhead.