Patent ID: 7803097

Claim:
An exercise device to assist in the performance of abdominal crunches and exercises comprising: a) a first board comprising a top face, a bottom face, and four edge faces, wherein said first board lays flat on a surface such that the bottom face contacts the surface; b) a second board also comprising a top face, a bottom face, and four edge faces, wherein said board is attached to the first board by c) a hinge affixed to both the first and second boards, wherein said hinge is affixed to the first board at a distance between two of its edge faces and affixed to the second board at one of its edge faces, and wherein said hinge allows the second board to move freely in relation to the first board within a range of angles from parallel to perpendicular orientation and any angle in between; and, d) at least one spring connected to both the first board at its top face and the second board at its bottom face, said spring or springs providing resistance to a force that would move the second board towards a parallel orientation with respect to the first board by compressing the spring or springs; wherein the first board has at least one slot into which a tabbed assembly is placed and firmly connected.