This is the most important stat. When this reaches your maximum you are DEAD.
Your maximum increases 5% for each level up to a point, then 10% each level up of survival skill starting at 100%.
Exhaustion will increase because of (rates ?) :
- Starvation
- Dehydration
- Diseases
- Poisoning
- Bleeding
- Radiations
- Some weather event
- Enemies
Exhaustion will decrease because when (rates ?) :
- Consuming foods that reduces exhaustion.
- Using medicines that reduces exhaustion.
- Having both Hunger and Thirst are less than 100 (having only Thirst < 100 will only reduce the increase)
- Resting
Resting will speed up the decrease of Exhaustion.
Trivia
Exhaustion is called "emaciation" in game files