| http://www.w3.org/ns/prov#value | - An abdominal exercise device, including:a platform adapted to be placed on a support surface for supporting the lower torso of a user, said platform including an upper support surface and a pair of opposed sides and a pair of upstanding walls on said sides of the platform extending above the support surface and forming a recess therebetween; a body cage for grasping by a user and providing head an
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