Sleep is not a personal hygiene issue. It is the maintenance window the brain has scheduled with the body since the Pleistocene. Skipping it is not a productivity hack; it is taking the system down for an unplanned outage and pretending the metrics still mean something.
Decisions made on five hours of sleep are not the same decisions you would have made on eight. The judgement is degraded in a way the person making the judgement cannot detect from the inside.
Protect the maintenance window. The system above it is the only one you have.
