Subjects (n=12) in the Wii.n.Walk arm will be trained using the Wii Fit games for 40-minute sessions, 3 times a week for a period of 4 weeks. Subjects will stand on the Wii Fit balance board and interact with the Wii games through weight shifting or using the Wii remote controller. The intervention protocol includes: 1) Yoga (static single and double leg exercises), 2) Balance games (lateral and poster/anterior weight shifting exercises in standing), 3) Aerobics (running on spot and step class), and 4) Strength training (dynamic single and double leg exercises). For the in-clinic training sessions, a trained research assistant will administer the intervention and will provide external cueing and correction of the pose if the participants use unsafe technique.