True or false: Exhalation facilitates extension of the spine.

The assertion that "exhalation facilitates extension of the spine" is indeed false. In Pilates and other movement practices, exhalation typically correlates with the act of flexing or stabilizing the spine, rather than extending it. During exhalation, the diaphragm relaxes, allowing the abdominal muscles to engage more effectively, which aids in spinal flexion and core stabilization.

Extension of the spine, especially during exercises that involve arching or lifting the chest, often occurs on inhalation. Inhalation provides the necessary expansion of the rib cage, facilitating alignment and lengthening through the spine. Therefore, understanding the relationship between breath and movement is central to practicing Pilates correctly and safely.