In which country did Pilates first implement springs for resistance in his exercises?

The correct answer highlights the historical context of Pilates and its development. Joseph Pilates developed the methods that eventually became known as Pilates in Germany during the early 20th century. He originally began his work focusing on physical rehabilitation techniques, which included the use of springs as resistance tools in his exercises.

The innovation of using springs was developed as part of his approach to creating supportive resistance for his clients, particularly those recovering from injuries or those who needed assistance to engage in movement. Before moving to the United States, Pilates was already experimenting with these apparatuses in Germany, which established a foundational aspect of his subsequent work abroad.

While springs are integral to Pilates equipment like the Reformer, identifying the specific country where he first implemented this technique is crucial for understanding the origins of his method. This context provides deeper insights into the evolution of Pilates practices and their roots in physical therapy during that time.