Guide · sleep · 3 min read
When to drink coffee so it does not ruin your sleep, if you are sceptical about all of this
Caffeine has a long tail. The cup at 3pm is still in your system at 9pm, whether you feel it or not.
Start here
Every point here is written so that a bad week is still enough to manage it.
Scepticism is welcome. You do not have to believe anything for this to work.
If you only do one thing from this page, do the first point below. It is first because it removes the most friction for the least effort.
What helps
Do not judge by whether you feel wired. Habitual drinkers stop feeling the effect long before it stops affecting sleep.
Drink your last coffee before you feel tired. Using it as a rescue at 4pm is what pushes the problem into the night.
If you are cutting down, do it gradually. Going from four cups to none produces a headache that people mistake for proof they need caffeine.
What to do when it does not work
Watch for the sources that are easy to forget: tea, cola, energy drinks, chocolate, some painkillers.
A reasonable cut-off for most people is early afternoon. If you are sensitive, make it noon.
Caffeine peaks in your blood about thirty to sixty minutes after drinking, and takes roughly five to six hours to halve.
Questions people ask
Does decaf work?
Decaf still contains a small amount, but it is usually low enough not to matter. It also keeps the ritual, which is half of the habit.
What about caffeine before a nap?
A short nap straight after a coffee is a real technique, but it only works if the coffee is before 2pm.
Written for people who want the practical version. No accounts, no tracking, no newsletter wall.
If this is not the angle you need, try A morning routine that survives a bad night — the version for a bad week, if you have five quiet minutes, When grief arrives out of nowhere, for people who have tried everything, if you have done this a hundred times or Using your body to come down after something stressful — the long answer, briefly, when you are not in the mood.