Thanks for your question.
The bread and wine are a reminder of the body (the bread) and the blood (the wine) of Jesus that were given and shed for our sins upon the cross. There is nothing magical or mystical about them; for example, the bread does not change - as some people wrongly believe - into the actual body of the Lord Jesus. They are to remind believers of the great work done by Jesus on their behalf, and only baptized believers are to share this service of remembrance. As Jesus said to his disciples, "This do in remembrance of me" (Luke 22:19).
The breaking of bread is the centre of true Christian fellowship. Believers make every effort to meet together each week, where they are able, to remember their Lord and his great salvation. They need regular contact if they are to grow together in love, and in truth. As the apostle said: "Let us consider one another to provoke unto love and to good works: not forsaking the assembly of ourselves together, as the manner of some is; but exhorting one another: and so much the more, as ye see the day approaching" (Hebrews 10:24,25).