What does the exercise Grasshopper primarily strengthen?

The exercise Grasshopper primarily strengthens the spine and hip extensors. This movement focuses on engaging the muscles of the back, particularly the erector spinae, which runs along the spine, and also activates the gluteus maximus and hamstrings, but most importantly, the hip extensors.

By requiring stabilization and extension of the spine while performing the movement, Grasshopper helps to increase strength and control in the lower back, enhancing overall postural alignment and functional movement patterns. The strength developed in the hip extensors also contributes to improved lower body performance, allowing for more powerful movements in activities that involve running, jumping, or lifting. This makes the exercise beneficial not only for Pilates practitioners but for anyone looking to enhance their core stability, back strength, and hip functionality.

In contrast, while the other options mention different muscle groups, they do not align with the primary focus of the Grasshopper exercise. The exercise does not prioritize the hip flexors and hamstrings specifically, nor is it primarily focused on the abdominals and obliques, which are more engaged in different exercises targeting the core.