I believe in transubstantiation but just wonder why we drink Jesus’s blood and eat his flesh?
These links should give you the answers that you need. If you have any further questions or concerns that are not answered by this, please contact Catholic Answers directly.
*]Is the blood of Christ kosher?
*]Why the Eucharist if drinking blood is forbidden by Jewish law?
*] Is it a sin to refuse to drink the blood of Christ?