a hand held exercise device for providing a user with a portable workout . the device may generally comprise a central handle diametrically disposed within and spanning across a ring element having a toroidally shaped inner chamber . internal bumpers within the inner chamber act to limit the range of motion or travel of at least one mobile element within the inner chamber . rotational forces imparted by the user upon the handle cause movement of the at least one mobile element that is responded to and countered with user muscle flexion . in this manner , a user may perform a satisfactory workout by continually imparting and then resisting rotation force in alternating clockwise and counterclockwise directions .