Patent ID: 7976445

Claim:
An apparatus comprising: a first door mounting mechanism to couple the apparatus to a top of a door; a first bracket coupled to the first door mounting mechanism; a first plurality of pulleys coupled to the first bracket; a first plurality of elastic cords each coupled to respective pulleys in the first plurality of pulleys, the first plurality of elastic cords including a first elastic cord having a first resistance and a second elastic cord having a second resistance level; a first handle removably coupled to any combination of the first plurality of elastic cords; a second door mounting mechanism to couple the apparatus to the top of the door; a second bracket coupled the second door mounting mechanism; a second plurality of pulleys coupled to the second bracket; a second plurality of elastic cords each coupled to respective pulleys in the second plurality of pulleys, the second plurality of elastic cords including a third elastic cord having a first resistance and a fourth elastic cord having a second resistance; a second handle removably coupled to any combination of the second plurality of elastic cords; a frame coupled to the first bracket and the second bracket; and a locking strap to couple the frame to a third door mounting mechanism, the third door mounting mechanism to couple the apparatus to a bottom of the door.