Exhausted
You move at half speed, you can’t run or charge, and you take a -3 penalty to your Armor Class, attack rolls, melee damage rolls, thrown weapon damage rolls that add Strength to damage, Reflex saving throws, initiative checks, and Strength- and Dexterity-based skill and ability checks. The amount of bulk you can carry without becoming encumbered is reduced by 3. After 1 hour of complete rest, you instead become fatigued.
Source
Core Rulebook pg. 276
Dragonscript
Effect
bonus -3 to [character.kac, character.eac, character.attack.melee, character.attack.ranged, character.attack.thrown, character.damage.melee, character.damage.thrown, character.reflex, character.initiative, character.athletics, character.acrobatics, character.piloting, character.sleightOfHand, character.stealth, character.dexterity.modifier, character.strength.modifier, character.bulk.encumbered] as misc;
