The days went by quite fast as Loki trained his body to withstand poisons. Knowing that he wouldn't be able to build up the immunity he wanted using his normal training method, Loki changed the way he trained. Instead of waiting for his body to be able to gain immunity, he was training himself to unconsciously purge any poison that was inflicted on him.
The idea was to repeatedly purge whatever toxins he had in the body using a combination of inner energy and mana without even thinking about it. Loki was hoping that this would be the same as muscle memory where when you do it enough times he would reach a point where he would do so without even thinking about it, like a reflex. So far the only thing that he achieved was to lessen the amount of spiritual energy needed to perform the detoxification. Still, it was progress nonetheless.
...
When Loki woke up on Sunday he was about to get ready for another day of training when he suddenly remembered something.