Genuflection to the Blessed Sacrament, the consecrated Eucharist, especially when arriving or leaving its presence, is a practice in the Anglican Communion, the Latin Rite Catholic Church, the Lutheran Church, and the Western Rite Orthodox Church. It is a comparatively modern replacement for the profound bow of head and body that remains the supreme act of liturgical reverence in the East. Since in many Anglican, Roman Catholic and Western Orthodox Churches the Blessed Sacrament is normally present behind the altar, genuflection is usual when arriving or passing in front of the altar at the communion rail. When genuflecting, making the sign of the cross is optional.