Endurance

Benefit: The character gains an advantage bonus on the following checks and saves: hourly Swim checks to avoid becoming fatigued, Constitution checks to continue running, Constitution checks to hold the character’s breath, Constitution checks to avoid damage from starvation or thirst, Constitution saves to avoid damage from hot or cold environments, and Constitution saves to resist suffocation or drowning.

Also, the character may sleep in medium or light armor without becoming fatigued.

Normal: A character without this feat who sleeps in armor is automatically fatigued the following day.