Add the following as a subrule of “Levels of Reality” called “Neural Strain”:

Mindjackers can accumulate Neural Strain, which represents their immaterial mind suffering damage or struggling to adapt to more complex realities. Each Mindjacker’s Neural Strain is publicly tracked as a non-negative integer that defaults to 0. If a Mindjacker’s Neural Strain is higher than twice their Level, that Mindjacker can reduce their Neural Strain to twice their Level as an Existential Action called Decompressing.

In the rule “Levels of Reality”, after “once every ten hours”, add “plus a number of hours equal to that Mindjacker’s Neural Strain”.