The material below is Open Game Content from a 3PP Source
Endurance
Harsh conditions or long exertions do not easily tire you.
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.
You may sleep in light or medium armor without becoming fatigued.
Normal: A character without this feat who sleeps in medium or heavier armor is fatigued the next day.
The material below is Open Game Content from the System Reference Document.
ENDURANCE [GENERAL]
Benefit: You gain a +4 bonus on the following checks and saves: Swim checks made to resist nonlethal damage, 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. Also, you may sleep in light or medium armor without becoming fatigued.
Normal: A character without this feat who sleeps in medium or heavier armor is automatically fatigued the next day.
Special: A ranger automatically gains Endurance as a bonus feat at 3rd level. He need not select it.
