A fitness device comprises a waist belt configured to fit around a user's waist and at least one resilient leg loop member. The resilient leg loop member has a proximal end movably anchored to the waist belt at a posterior position. The resilient leg loop member has an opposite distal end configured for coupling with one of the user's feet. The fitness device causes a predetermined resistance force to be generated against the user's movement when the user extends the leg loop member beyond its length at rest. In some embodiments, two resilient leg loop members are provided. Methods of using the exercise device are also described.
