Bread remains bread. The juice remains a grape product. But we DO take Christ in. For while we handle, taste and swallow these very ordinary elements, the Holy Spirit moves around them and us, enters us, and touches our Spirit. Perhaps it sounds all very mystical and unearthly.
Communion is a time that goes beyond our heads.
It is aimed straight at the heart. And He will. He really will. Sometimes it is a deeply moving time, and spiritual sparks fly. Sometimes there is quiet spiritual growth and retrenchment.