Abstract: A wearable exercise device in the form of a backpack has resistant pull cables at both shoulders and at both hips. Handgrips can be connected to the pulls in various ways to provide for varying degrees of resistance. The tension of the pulls is adjustable as is the mass of the backpack as a whole. A weight compartment can hold one or two weights of varying masses. The pulls at the hips can be connected either to handgrips or to the back of specialized shoes. When connected to shoes, the resistance of the pulls simulate running up hill.