Tantra does not seek to deny the physical world but to utilize it as a vehicle for transcendence. It views the body not as a hurdle to spiritual growth, but as the primary instrument for it. The occult science of Tantra involves the manipulation of Prana (life force energy) through practices such as Kundalini Yoga , meditation, rituals, and the consecration of Yantras and Mantras. It is the discipline that binds the other two together. A practitioner of Tantra uses the focus of a Mantra to energize the structure of a Yantra, thereby altering their reality. It is a holistic science that acknowledges that energy and consciousness are inextricably linked.