Catholics believe the Eucharist, or Communion, is both a sacrifice and a meal. We believe in the real presence of Jesus, who died for our sins. As we receive Christ's Body and Blood, we also are nourished spiritually and brought closer to God.
In Holy Communion, we are eating the True Body and Blood of Jesus Christ, without which "you shall not have life in you" (John 6:53). It is important to receive the Sacrament worthily by being free from any grave or mortal sin.