Fatigue

Default value: 0 | Min value: -- | Max value: 1000

Fatigue display

Fatigue > 1000 Massive Fatigue (not displayed, internal only)

Every 5 minutes it will increase by one point. Various traits and mutations can affect this:
Sleep deprivation increases fatigue. Fatigue increase scales with the severity of sleep deprivation.
A character with the chemical imbalance trait has a small chance each turn of becoming fatigued for a low amount ("You feel fatigued all of a sudden.").
Every 5 minutes when having a common cold or a flu.
Occasionally when suffering a nicotine craving.
Physically taxing jobs like burrowing, mining with a pickaxe or a jackhammer, digging with a shovel, sawing with a hacksaw, chopping trees and logs with axes (etc.) increases fatigue.
Using a hand crank to charge batteries increases fatigue.
Using a vibrator increases fatigue.
Hibernation can interact with food consumption resulting in increased fatigue.
Tentacled mutants can have their tentacles stick to the ground. Pulling them them adds fatigue.
Drinking poppy nectar increases fatigue. Only for mutants with Proboscis or Hummingbird Beak.
Fatigue is also reaction to using mutagens and purifier.
Certain drugs can raise fatigue, some as a side effect (for ex. coughing syrop), and some as a primary effect, or even as a result of a comedown.
Endocrine Enervator faulty bionic will cause fatigue.
High levels of depressants or painkillers in your system will cause extra fatigue.

By sleeping (press $).
- Aqueous Repose mutation lets you recover fatigue faster when sleeping underwater.
- Mycogenesis mutation lests you recover fatigue faster on fungal ground.
By consuming some of the stimulants, especially containing mildly addictive caffeine, like coffee, cola, energy drink, tea and certain drugs. Many of those items have variants, or derivatives like the extreme atomic coffee. Remember that not all stimulants will reduce fatigue, and those that do are marked internally in the code with CAFF flag.
Special military grade stimulant injectors can reduce fatigue.

Your character will sleep on their own if you don't make them sleep regularly:

Fatigue >= 192: You'll be warned every 50 turns ("You're feeling tired. Press '$' to lie down for sleep.") and will be prompted if in the middle of an activity ("You're feeling tired.")
Fatigue > 383, (Dead tired and above): You'll take stat penalties as a "disease", with encouragement to sleep.
Fatigue > 575 (Exhausted and above): You'll randomly microsleep. These won't markedly help your fatigue but can be dangerous in combat or driving situations.
Fatigue 600: You'll be warned every 10 turns ("You haven't slept in 2 days!")
Fatigue 800: You'll be warned ("Anywhere would be a good place to sleep...")
Fatigue 1000: Your character will sleep on their own. Fatigue will be reduced by 10 ("Survivor sleep now.")

Fatigue has many interactions with sleeping factors. In short the higher the fatigue the easier it is to fall asleep.
Fatigue reduces body temperature when sleeping.
Fatigue caps focus. See: Focus.
Fatigue field causes fatigue as a result of clashing dimensions. ("The fabric of space seems to decay.")