Fatigue is a health meter in Out of Space that might be emptied by resting. It knocks down players who let the bar reach its cap, forcing the player to sleep on the floor until fully recovered or until another player uses a bucket of water to wake him/her up.
Some Appliances can be used to decrease a player's fatigue, like the Armchair, the Couch and the Bed, with the restoration rate increasing from the first to the latter. Nightstand doubles restoration rate efficiency.
Plant restores fatigue of players in the room.
All actions depletes fatigue. Using broom and exercise bike depletes fatigue at very high rate.