Endurance

You can hold fast in tough times, remaining fresh when others would be worn down. 

Prerequisites: Constitution 13

Benefit: When rolling recovery dice, you reroll 1s (rolling again until none are present).

You gain a +4 bonus on Constitution checks to keep on moving (be it running, swimming, or marching long distance), hold your breath and endure hunger and thirst. You also gain this bonus on constitution checks made to avoid fatigue in hot or cold environments.

Finally, you may sleep in light or medium armor without becoming fatigued.

Normal: A character who sleeps in armor is fatigued.