Sleep is the recurring biological state in which the School reduces engagement with the outside world and supports restoration, memory, learning and regulation.
Inside the School
InsideISS treats sleep as a system condition rather than a score. A difficult night can change the next day's Body, Mind, Emotions, Energy and Connection, while the state of those Worlds can also influence the next night.
In everyday life
You wake at 3:17 a.m. and immediately calculate how many hours remain before morning. The Body is tired, but the Mind starts solving sleep, and the effort to make sleep happen adds another layer of alertness.
On another night, travel has shifted your routine. You sleep lightly, feel slower the next day and notice that ordinary decisions require more effort. Nothing dramatic happened; the whole School simply started from a different baseline.
System connections under load
Sleep affects more than tiredness. Under load, the Secretary may become less flexible, Students more reactive and Security quicker to notice possible problems. Regulation may begin with steadier timing, lower evening demand or accepting that one imperfect night does not have to become a verdict on the next day.
Important nuance
Sleep becomes especially important when the School starts reacting to the measurement or monitoring of sleep itself. The useful question is not whether every night was perfect, but what the School needs across time. Connected paths: The Janitor · The Workers · Fatigue · Stress · Body Check-In
Sleep changes the starting conditions of the whole School, but one imperfect night does not define the system.