- How tired you are. Running, attacking, jumping, ... will drain fatigue. Low fatigue makes it harder to successfully perform actions.
The green Fatigue bar in the lower left corner of the screen indicates your character's current and maximum fatigue.
Losing fatigue and consequences
A character's fatigue indicator will decrease when they perform exercises such as running, jumping, or attacking, indicating roughly how tired they are. Fatigue plays a part in many actions, so the lower a character's Fatigue gets, the more difficult it becomes to fight, cast spells, or do anything else effectively. A low fatigue will even reduce the height of jumps. Surprisingly, even Mercantile is affected by fatigue. Similarly, with Fatigue raised above the derived total, skills become more effective.
Fatigue will regenerate over time as the character performs less strenuous actions, and can also be restored with Restore Fatigue potions, items, or spells. You can also wait or sleep for 1 hour to restore your Fatigue.
Your natural fatigue regeneration is
2.5 + (0.02 * Endurance) fatigue/sec.
Cost of various activities
|Running*||5 per second|
|Swimming*||7 per second|
* Plus an encumbrance penalty