Tai Chi-naïve participants from Culver City Senior Center will receive a 10-week Tai Chi. The investigators will compare this group to a wait-list control group. All subjects will receive a packet of questionnaires of pre- and post-intervention vitality, fatigue and health-related quality of life. Subjects will also be given an activity monitor to wear for 2 days before they start the Tai Chi class and for 2 days after they complete the class, to determine if there is a change in general physical activity level.