There is accumulating evidence for positive effects of exercise on gait speed, strength, balance, and quality of life for people with PD. Habitual physical activity can lower risk for developing PD. In toxin-induced animal models of PD, exercise may decrease neuronal injury. The key components of an exercise program in PD include: 1) cueing strategies to improve gait; 2) cognitive movement strategies to improve transfers; 3) exercises to improve balance, and 4) training of joint mobility and muscle power to physical capacity. Traditional exercise programs can meet these needs but often they are not very appealing for older adults including patients with PD. Unfortunately more than half of individuals with PD does not meet the recommended daily level physical activity.