Sleep is not a productivity hack

A patient told me recently that he had "optimised down to five and a half hours". He said it the way people say they have got their mile time down — as an achievement, a mark of discipline. He had come to see me about his blood pressure. The literature is not subtle Chronic short sleep is associated with hypertension, impaired glucose regulation, weight gain, weakened immune response, and a meaningfully increased risk of cardiovascular events. These are not marginal effects at the edge of statistical significance. They are large, replicated, and consistent across populations. They are also, for most people, completely unpersuasive — because they arrive decades later, to a person who does not yet exist in any vivid way, while the deadline is tonight. Why the productivity framing fails So health writing reaches for the near-term argument instead: sleep more and you will think better, remember more, perform. All true. And I have come to think it is a mistake to lead with it. The moment you justify sleep by its effect on output, you have accepted that output is the thing that settles the question. Which means the argument reverses the instant someone believes — correctly or not — that they can perform adequately on five hours. And plenty of people can, for a while. Then the reasoning that was supposed to protect them is the reasoning that gives them permission. Any defence of rest that rests on productivity will be overruled the moment productivity says otherwise. What I say instead A third of your life is not overhead. It is not the maintenance window between the parts that count. It is a third of the life, and treating it as a cost centre to be minimised is a strange way to hold something you get once. That argument does not sound clinical, and I am aware of it. But I have watched the clinical version fail in the room often enough to stop trusting it on its own. What actually moves people is not the risk table. It is noticing that they had adopted, without ever deciding to, a view in which their own hours only counted if something came out the other end. The practical part, briefly A fixed wake time does more than a fixed bedtime. The body anchors on the morning. Light in the first hour, dimness in the last. This is the single highest-leverage change for most people. If you cannot sleep, get up. Lying awake teaches the bed to mean vigilance. Alcohol sedates and then fragments. It is not a sleep aid, whatever it feels like at the time. Persistent insomnia is a treatable condition with a real evidence base behind CBT-I. It is not a character flaw and it does not need to be endured. My patient went to seven hours over about three months, badly and with relapses. His blood pressure came down. He also mentioned, almost in passing, that he had stopped dreading Sunday evenings — which was not on any chart I keep, and is probably the part that will make it stick.

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