You are corpulent and the trait is used in any situation where dexterity and agility would be a factor. It also affects things such as material use for clothing and armor, as well as when eating.
With a value of 2 or more of this trait, you must pay an additional +20% on the value of clothing and armor, and +50% on food for you to be satisfied. At a value of 4 you must pay an additional +30% on clothing and armor, and double the price for food.