Fatness

Fatness is a key element in Fatty Text Adventure, if you couldn't tell by the name. Your current Fatness count can be found at the bottom left corner of your screen. It increases as you pass time with some Fullness greater than 0, and decreases when you pass time with 0 Fullness. You can speed up this process by waiting or sleeping. You will also lose Fatness when you pass out from overeating. Fatness can be sacrificed in exchange for Strength, Endurance, and Agility at the Training Grounds, or in exchange for Intelligence at the Mage's Guild. Depending on your current fatness, your character description in Stats will change, and it influences various dialogue options throughout the story.

The Wildling Shaman in the Grasslands can directly increase your fatness, but the effects disappear when the encounter ends.

Also, while weight also includes factors like height and muscle mass, Fatness is a good way to get a sense of how much of your size is from packing away too many carbs versus otherwise.