Describe "Corkscrew" on the reformer.

The "Corkscrew" is a Pilates movement performed on the reformer that emphasizes rotational movement and is specifically designed to target the obliques while enhancing spinal mobility. This exercise involves a controlled twisting motion of the torso, requiring engagement from the core muscles, particularly the obliques, which are essential for maintaining stability and control during the rotation.

By promoting spinal mobility, the Corkscrew not only strengthens the targeted muscles but also helps improve overall flexibility and functional movement patterns of the spine. The exercise encourages the coordination of movement between the upper body and lower body, making it a comprehensive exercise for both core strength and mobility.

The focus on rotation distinguishes this movement from static holds or purely leg-focused motions, as it incorporates dynamic control and flexibility in the spine, fundamental aspects of Pilates practice.