What unique feature does the Springboard offer compared to the Reformer?

The Springboard offers the unique feature of allowing for unilateral work in a stable position. This aspect is particularly important in Pilates training, as it enables practitioners to focus on one side of the body at a time while maintaining stability. This can enhance muscle activation, balance, and coordination. The stable configuration of the Springboard also encourages proper alignment and form during exercises, which can help in refining muscle engagement and promoting body awareness.

The other options do not accurately describe the distinctiveness of the Springboard. Unlike the assertion that the Springboard lacks springs for resistance, it actually does incorporate springs for varying resistance, similar to the Reformer but in a different setup. The claim of using heavier weights also doesn't align with the Springboard’s design, as it is primarily spring-based rather than weight-based. Finally, while the Springboard can be used for lower body work, it is not exclusively designed for that purpose; it can accommodate a full range of exercises targeting various body parts, including the upper body.