You must receive the Eucharist properly because it is a solemn and ancient religious ritual, and if you do not do it properly you would be showing disrespect to that tradition.
Catholics must receive the Eucharist at least once per year during the Easter season.
To receive Eucharist you must 1)Be free of mortal sin 2)Not eat or drink anything one hour prior to receiving it(water is permitted at any time though)
In the church.
Baptism. Ordinarily to be confirmed you would also receive Penance and Eucharist first. But it is possible to receive Confirmation next after Baptism, as in the Rite of Christian Initiation.
in a convoluted sense yes you do, its not the normal Eucharist though.
Eucharist is a form of Initiation to the church to receive God's Communion.
Catholics do not 'take' communion, they 'receive' communion. Yes, you must be a baptized Catholic to receive communion in a Catholic Church. Also, you must have undergone instruction and received your First Holy Communion.
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Eucharist
Who is going to know and hold you accountable if you don't confess your sins before taking the Eucharist?
When you receive the Eucharist, you remember that is is the Body and Blood of Christ, and Christ gave himself up for all of us.
The Eucharist gives one the "food of eternal life." The Eucharist also allows us to receive the Lord and shows us that we are committed to Him. The Eucharist also is the initiation into Christ's body and blood which was shed for us. Therefore Eucharist is a sacrament of Initiation.