Japa is a spiritual discipline involving the meditative repetition of a mantra or name of God. Usually the mantra or name is spoken softly, enough for the practitioner to hear it, or more rarely it is spoken purely within the recitors mind. Japa is commonly performed whilst sitting in a yogic meditation posture (said to improve concentration) but this is not always the case in all traditions. It is present in varied forms within most religions in the world, although the Dharmic Religions generally give more emphasis to it as a specific discipline.
In it not uncommon for people wear japa beads around their neck, although some practitioners (such as Gaudiya Vaishnavas) prefer to carry them in a bead-bag in order to keep them clean.
Many Catholic prayers, such as "Hail Mary" (spoken using rosary beads) could be classified as forms of japa, as with other Christian prayer forms. Also Tibetan Buddhists include japa meditation as a large part of their religious practices.