Abstract: Techniques and structure are disclosed for providing and using an exercise device which is mobile and self-contained. In some instances, the device may include a binding positionable on a user's leg, an anchoring device positionable on the user's torso, and a resistive element which operatively couples the leg binding to the anchoring device. In some such instances, the resistive element may be directed over one or more of the user's shoulders. In some cases, the device can be configured to be used on both of a user's legs. In some instances, the device may be used to exercise (e.g., develop, train, work out, exert, condition, etc.) a user's leg muscles, for example, without outside or otherwise external support/anchoring (e.g., from a person or other stationary object).