Which muscles are primarily focused on during the Teaser Prep exercise?

In the Teaser Prep exercise, the primary focus is indeed on the abdominal muscles and the back extensors. This exercise is designed to develop core strength and control, essential principles in Pilates.

The abdominals engage profoundly during the Teaser Prep as they help to initiate and maintain the roll-up action while also stabilizing the spine. The back extensors complement this by supporting the back while the torso is lifted and balanced. This synergistic action between the abs and back extensors fosters effective trunk stabilization, which is crucial for mastering the more advanced Teaser exercise.

While exercises may activate other muscle groups as secondary actors, the emphasis in Teaser Prep is explicitly on cultivating strength and coordination in the core area, which directly enhances one's ability to perform more complex Pilates movements safely and effectively.