Eren stood across from Annie, she would now be teaching him the way of the Titans Akimichi having left the village behind. Her control over her abilities were impressive and he wanted to learn how she did it.
The place they chose for this training was perfect, secluded. It made things safer, for them and people who dare try to interfere with their training. He thought on Annie's words briefly, remembering what he had learned up to that point.
"Through the rapid conversion of calories into chakra, our clan is able to utilize our secret techniques which revolve around the expansion and increase of our body parts, or our entire body which we use to aid us in close quarters combat. In order to gain the calories necessary to utilize these techniques, we consume large quantities of food but, if those calories aren't enough, we are able to make use of the Three Colored Pills which allows us to convert excess fat into chakra. Due to the rapid rate at which the techniques consume our chakra, we eat a lot of food to not only replenish our chakra reserves but, increase them as well (+300)."