I realize that when we receive either the Host or from the Cup, we are receiving the complete Body, Blood, Soul, and Divinity of Jesus. It is only necessary to receive under one species.
But I often am curious WHY Jesus gave us both. Our God is not someone who does things mindlessly, or casually. He acts with purpose in everything He does, even if we don't understand at the time. If we don't receive anything extra from receiving both, why is there both species?