One thing Azaroth discovered early with his new initiate cores was that it took essence in the air faster. He sat on his bed drawing in essence to his normal core.
As fast as it was to now take essence into his core it still didn't make much of a difference because it didn't fill his now large core faster. If it had been his former core, he was sure to have filled it quicker.
He stayed there for one and a half hours. He crossed his legs and closed his eyes, concentrating on the feel of essence as it entered his body. The essence didn't have a specific passage through the body, it entered through the whole body.
But it didn't feel like it. It didn't feel like it was passing through your whole body and Azaroth had come to enjoy the sensation of essence passing his body like an inferior adrenaline before it entered his core.
