Effects of Exercise on Dystonia Pathophysiology

Inclusion Criteria: * Patients have predominantly focal cervical dystonia and whose diagnosis will be confirmed by a movement disorders specialist following criteria recommended by Movement Disorders Society. * Moderate disease severity. * Are 30 to 85 years old * Are able to tolerate exercise sessions. * Reporting suboptimal clinical benefits despite receiving maximally tolerated doses of BoNT injections for the neck muscles and/or oral pharmacological therapy. Exclusion Criteria: * Participating in an alternate structured exercise program, receiving regular physical or occupational therapy * Have significant pain, spondylosis or active arthritis * Fail the Physical Activity Readiness Questionnaire * Have significant cognitive impairment * Have implanted electrical device (eg, cardiac pacemaker or a DBS or a neurostimulator or metallic clip in their body, as necessitated by the risks of MRI or TMS * Active seizure disorder; not be eligible for TMS and claustrophobic for MRI portion. As necessitated by the risks of MRI or TMS, patients who have any type of implanted electrical device (such as a cardiac pacemaker or a neurostimulator), or a certain type of metallic clip in their body (i.e., an aneurysm clip in the brain), active seizure disorder are not eligible for participation in the MRI or TMS portion of the study. * Pregnancy tests will be carried out for each female subject of child bearing potential prior to the participation in the study and prior to each follow up visit (as indicated).