During the yoga sessions, you will be asked to do deep-breathing exercises and perform different stretching and movement exercises. The movements are designed not to be difficult, and you will sit on the floor or in a chair while you do them. You can move through the exercises at your own pace. The instructor will be available to answer any question you may have about the practice of Hatha yoga. Most of the yoga sessions may be videotaped. This is so the researchers can keep track of the quality of the sessions. Only the study staff will be able to view this videotape. The video files are digital and will be deleted after all the data are studied.