Patent ID: 8864632

Claim:
An exercise apparatus, consisting essentially of: a base element for placement of at least a portion of a user's foot, the base element consisting of a substantially flat sheet of plastic with a tab region at a periphery, the flat sheet of plastic having a thickness between approximately 0.1 mm and 1.0 mm and dimensioned approximately 10 cm-20 cm wide and approximately 10 cm-30 cm long, wherein a bottom side of the sheet of plastic has a reduced coefficient of friction that is sufficiently below that of the user's foot or a shoe sole and adapted to allow the user's foot or shoe sole to easily slide on a support surface in use, and the sheet of plastic has sufficient rigidity to prevent wrinkling, buckling, or folding in use; and a leash element attached at only one end to the base element, the leash element attached to and extending from the tab region of the base element and dimensioned approximately 45 cm-90 cm long.