Guide · sleep · 3 min read
When to drink coffee so it does not ruin your sleep — the two-minute version, when you have been meaning to start
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.
You have been meaning to start. This is the least intimidating way in.
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
Caffeine peaks in your blood about thirty to sixty minutes after drinking, and takes roughly five to six hours to halve.
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.
Questions people ask
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.