Vim is generated every turn and is distributed throughout the body to support core life systems and fight diseases. Remaining vim is available for performing actions. Vim cannot be stored from turn to turn so any unused vim disappears in the form of heat.
The total amount of vim generated per turn varies depending on genetics, nourishment, and rest. Conditions may also affect the amount of vim generated per turn.
A bioform will die if it cannot dedicate vim to Life Support. Depending on the setting, there may be a way to bring bioforms back to life but there are no default rules for this in the StoryHammer role-playing game system.