Endurance (Feat)
Harsh conditions or long exertions do not easily tire you.
Prerequisites: -
Benefit: You gain a +4 bonus on the following checks and saves: Swim checks made to resist nonlethal damage from exhaustion; Constitution checks made to continue running; Constitution checks made to avoid nonlethal damage from a forced march; Constitution checks made to hold your breath; Constitution checks made to avoid nonlethal damage from starvation or thirst; Fortitude saves made to avoid nonlethal damage from hot or cold environments; and Fortitude saves made to resist damage from suffocation. This bonus increases to +5 at 10th level, +6 at 20th level, and +7 at 30th level.
You may sleep in light, medium or heavy armor without becoming fatigued.
Normal: A character without this feat who sleeps in medium or heavier armor is fatigued the next day.