Abstract: A support apparatus (1) adapted for positioning beneath the lower back of a user (2) in a generally semi-supine position. The support apparatus includes a base (5) for positioning on a platform (6) such as a floor. First and second inclined support surfaces (10, 11) are disposed to diverge upwardly from a generally transverse valley formation (12) defined between the first and second support surfaces. The first inclined support surface is adapted for positioning substantially beneath the coccyx or sacrum of the user, the second inclined support surface is adapted for positioning substantially beneath one or more of the thoracic vertebrae of the user, and the valley formation is adapted for positioning substantially beneath one or more of the lumbar vertebrae of the user, thereby to induce a relaxation response in the lower back of a user.