is one of the six core character attributes
Endurance grants additional grants Action, Mind, and Defense vs States.
Each point in Endurance grants +1 to Action and Mind, up to 255 Endurance.
At 255 Endurance, a bonus 50 points to Action and Mind is granted.
After that, the Action/Mind bonus granted by Endurance hits diminishing returns (each point grants fewer stats the more you already have). See the below table for examples: