The classical medicine of India is called Ayurveda (the science of life and longevity). It is a comprehensive and holistic system, outlining the substances, qualities and actions that are life-enhancing and it covers all aspects of life. The use of herbal medicines is primary but Ayurveda employs many types of therapies, including massage, diet, exercise, enemas and ointments. Ayurveda is renowned for preventative health care, illustrating how to stay in balance according to one's constitution and in relation to seasonal changes. The basis of Ayurvedic medicine is a profound understanding that living well is only possible when mind and body are in harmony.