Boston researchers found a reduction in depressive symptoms among people that practice tai chi via 50 Chinese-Americans diagnosed with depression. they were divided into three groups. One group participated in tai chi sessions twice a week and were encouraged to practice the movements at home three times a week. Another group attended twice-weekly depression education sessions and a third served as the control group. After 12 weeks, the tai chi group reported significant improvements in depression symptoms, which continued after the study was completed, measured at 24 weeks.