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After an interesting talk about the structure of the world and its many mysteries, Elayne, Mark, and Gabriel joined up with everyone else, deciding to make a nice barbeque for dinner. They had eaten lunch earlier, yes, but it has been like almost four hours since then, so it was totally justified to eat something as "dinner" as Elayne wanted to justify it.
In truth, their bodies had grown very powerful and also required an equally large quantity of nutrients and calories, eating the same way humans did wasn't as sustainable anymore, as they would usually feel hungry pretty quickly.
In reality, they had to eat at least three to four times the original quantity of food they ate before to keep their strong bodies with great health. And that's considering the food had to be specially infused with magical properties!