Abstract: An exercise apparatus which isometrically works the upper body muscles while the person is engaged in an aerobic activity such as walking or while the person remains in a standing or sitting stationary position. The exercise apparatus includes a belt member having a first end, a second end, and a body section disposed between the first and second ends. The first and second ends are securable to each other for fastening the belt member around the torso of a person. A pulley housing is mounted to the body section of the belt. A pulley wheel is rotatably mounted within the pulley housing. An adjustable tension mechanism is attached to the pulley housing and the pulley wheel for selectively adjusting an amount of force needed to rotate the pulley wheel within the pulley housing.