During the meal Jesus took some bread in his hands. He blessed the bread and broke it. Then he gave it to his disciples and said, “Take this. It is my body.”
When we drink from the cup we ask God to bless, isn't that sharing in the blood of Christ? When we eat the bread we break, isn't that sharing in the body of Christ?
Any followers who count one day more important than another day do it to honor their Lord. And any followers who eat meat give thanks to God, just like the ones who don't eat meat.