What are two benefits of using the long box on the reformer, and when would you choose it?

• A. It reduces spinal articulation and makes movements easier with less control.
• B. It provides no change in leverage and is only for aesthetics.
• C. It enables greater spinal articulation and stable leverage for more precise trunk control; use it for hip-flexion/extension patterns and to elongate or shorten leverage safely.
• D. It primarily improves cardiovascular endurance.

Answer: (C)