638:/std/living/savevars.c (/std/living.c)
(public void) add_fatigue(int f)
/*
 * Function name:   add_fatigue
 * Description:     Add an amount of fatigue points to the current amount
 *                  of the living. Observe, negative argument makes a player
 *                  more tired.
 * Arguments:       f: the amount of change
 */
