Why you can't switch off after work

There is a particular kind of evening where you are exhausted by six, useless by nine, and completely awake by half past eleven. Nothing about it feels logical. You wanted to sleep for hours, and the moment sleep became available you were alert.

This is common enough to be unremarkable. It usually has less to do with sleep than with what came before it.

Tired and wired are not opposites

Being tired is a function of how long you have been awake and how hard you have worked. Being alert is a separate system, and stress runs it. When the day has kept you braced, whether by deadlines or a difficult conversation or a commute that asked for constant small decisions, the alerting system stays up well after the tiredness arrives. The two sit on top of each other. The result is that strange state of being too tired to do anything and too switched on to stop.

The alerting system has no hard stop. It comes down on its own schedule, and that schedule is slower than most evenings allow for.

The gap between finishing and stopping

Most people finish work and count themselves done. The body does not treat those as the same event. Finishing is when you close the laptop. Stopping is somewhere later, once nothing has asked you for a decision in a while.

If the space between the two is fifteen minutes, you have carried the whole day into the evening. That is the mechanism behind the eleven o'clock second wind. The down-shift only began when you finally stopped, and it needs longer than the time you left it.

The commute used to do this by accident

A journey home was, for a lot of people, a buffer that worked without anyone designing it. Nothing much was required of you for thirty or forty minutes. Working from home removed that buffer, and very few people replaced it with anything. The walk that goes nowhere in particular is not a wellness affectation. It is a reconstruction of something the day used to hand you for free.

Why the phone makes it worse than it looks

Scrolling feels like rest because it takes no effort. It is not restful in the way that matters here, because it keeps handing you small things to react to. Each one is trivial. Each one keeps the alerting system fed. An hour of it can leave you no closer to stopping than when you started, which is why people describe an evening on the phone as having vanished rather than having helped.

What closes the gap

Not much, and it is dull.

• A marked end to the day. Something small and repeated that means work is over. Shutting the laptop in a drawer, changing clothes, a specific walk. It is a signal, and signals work by repetition.
• Somewhere to put tomorrow. Unfinished things stay noisy while the only place they live is your head. A list is a container.
• A stretch of low-demand time. Half an hour where nothing asks you to decide anything. Cooking counts. Music counts. A conversation that is not about logistics counts.
• Protecting the last hour. The hour before bed does the most work and gets sacrificed first, usually to the thing that felt like relaxing and was not.

When it is not just a long week

If you cannot switch off for weeks at a stretch, if the exhaustion does not lift after a proper rest, or if the wound-up feeling arrives with a racing heart, dread, or waking at three most mornings, raise it with a doctor. Persistent insomnia and anxiety are both treatable, and both are treated better by someone qualified than by an evening routine.

Where a drink comes into this

A drink is a marker, not a mechanism. One of the small repeated signals that the day is closing. That is the whole of the claim.

Dozoff is a non-carbonated peach tea in a 250 ml can, made for that end of the day, with four ingredients studied in relation to stress and relaxation: L-theanine, magnesium, valerian root and vitamin B6. The full ingredient list is on the can. It is not a medicinal product.

All sixteen human studies behind those four ingredients are on our references page, with what each one looked at and what it showed.