Sleep is not a productivity hack

Sleep has become another project to optimise. We track deep sleep, compare nightly scores and search for routines that promise more energy and better performance. Rest is treated as valuable mainly because it may help us work harder the next day.

Matthew Walker challenges the premise behind this way of thinking:

“Sleep is not an optional lifestyle luxury. Sleep is a nonnegotiable biological necessity.”

In Why We Sleep, Walker describes sleep as an active biological process supporting memory, learning, emotional regulation, immunity and physical health. Its value does not depend on whether it makes us more productive. We do not need to earn sleep by completing enough tasks, just as we do not need to justify eating or breathing with improved workplace performance.

The attempt to optimise sleep can also produce a surprising result: worse sleep. Researchers have described orthosomnia, a perfectionistic pursuit of ideal sleep driven by data from watches and fitness trackers. Some people become so concerned about their sleep scores that the anxiety itself makes sleeping more difficult. A device intended to reduce uncertainty creates a new reason to lie awake.

Sleep is involuntary. We can create favourable conditions for it, but we cannot command ourselves to become unconscious. Research into “sleep effort” suggests that trying too hard to control this process may perpetuate insomnia. The night becomes another test, and every awakening feels like failure.

Regular hours, a dark and cool bedroom, less caffeine and enough time in bed may help. But the objective is not a perfect score or a flawlessly engineered morning. Sometimes the healthiest response is to stop evaluating every night.

Sleep does improve performance. That is one of its benefits, not its reason for existing. Rest deserves protection even when it produces nothing we can measure.

Sources

— Matthew Walker