Throughout history, many cultures have used imagery for therapeutic purposes, including the Navajo, ancient Egyptians, Greeks, and Chinese. Religions such as Hinduism and Judaism have also practiced imagery. In modern times, the term "guided imagery" may be used to refer to a number of techniques, including metaphor, story telling, fantasy, game playing, dream interpretation, drawing, visualization, active imagination, or direct suggestion using imagery. Therapeutic guided imagery may be used to help patients relax and focus on images associated with personal issues they are confronting. Experienced guided imagery practitioners may use an interactive, objective guiding style to encourage patients to find solutions to problems by exploring their existing inner resources. Biofeedback is sometimes used with imagery to enhance meditative relaxation. Interactive guided imagery groups, classes, workshops, and seminars are available, as well as books and audiotapes.