As it currently stands, Chista needs about 200,000 calories per day.

That's a little above average for an Apex Glutton.

Why so many calories?

A lot of it goes right back into Chista's massive digestive tract. Even "empty" Chista's stomach is still lugging gallons of chyme, acid, mucus, bile, and lots of debris from past meals. Her intestines are rumbling and pumping chyme and junk deeper and deeper. It's active 24/7. That's not considering how the curse has altered her musculature to be rather dense, which needs more calories to keep going; the enhanced healing rate and the metabolic processes that keep that massive body moving are all through the roof to keep Chista in tip-top shape.

One of the "hidden" powers of an Apex Glutton is that their bodies are at peak condition under the softness. They are stronger, faster, and more durable than those around them, and like a true Apex Predator, they can launch themselves into a powerful explosion of movement and might to muscle anyone down their gullet. That stomach is a very fuel-hungry engine for a powerful body.