Biological timers reduce Vim over time in order to accommodate the basic needs of the body. The two biological timers are known as Hunger and Fatigue. As time progresses in the game world, the biological timers “tick”, causing vim output to be reduced.
The Hunger timer ticks every hour (in-game), moving 1 vim from Life Support to Hunger. If there are already 5 or more vim dedicated to hunger when the timer ticks, increase the number of Vim to 2.
The Fatigue timer ticks every three hours (in-game), moving 1 vim from Life Support to Fatigue. If there are already 5 or more vim dedicated to fatigue when the timer ticks, increase the number of Vim to 2.