Endurance (2, NA, NA) (DSG):




A character with endurance proficiency is able to
perform physical activity longer than a normal character, without
succumbing to fatigue && exhaustion. This proficiency doubles
the length of time that a character can exert himself before the
effects of fatigue and exhaustion set in.
2, NA, NA

Ilmater (god of endurance)
 
 

Endurance (2, NA, NA) (WSG): A character with endurance proficiency is able to
perform continual strenuous physical activity for twice as long as
a normal character can before becoming subject to the effects of
fatigue and exhaustion. Note that this proficiency does not enable
a character to extend the length of time that he can remain
unaffected by a lack of food and/or water.