09/17/2026
The Exercise Ball Opposites Drop (often called the dead bug variation or ball transfer where you hold an exercise ball between your knees and hands, then lower opposite limbs) and Exercise Ball Sit-Ups are two power-packed core movements that translate directly to on-court tennis performance. Because tennis is a sport driven by ground force production, rotational power, and constant deceleration, building a multi-planar, stable trunk is non-negotiable!🎾