A multi-purpose exercise device has first and second hemispherical bodies each having a planar, circular face and a hemispherical dome extending from the face, and having a bore extending through the body. A rod is configured to be received within the bore of each body and the bodies have a configuration forming a spherical assembly wherein the rod extends through the bore of each body forming an axle. Handles connect to the rod on opposing sides of the spherical assembly, and are operable to receive a substantial downward force thereon. The handles prevent axial movement of each body relative to the rod. The spherical assembly is operable to roll on a floor surface with a substantial downward force applied to the handles. The bodies have a disassembled configuration, wherein the rod is removed from the assembly.