Bedtime procrastination is going to bed later than you intended, without any external reason to stay up. No deadline, no emergency, nothing on. You meant to sleep at eleven, it is one, and nothing happened in those two hours that you would describe as a reason.
The term comes from research by Kroese and colleagues in 2014, who defined it precisely: failing to go to bed at the intended time while no external circumstances prevent it. That last clause is the whole definition. Staying up for a sick child is not procrastination. Staying up for nothing is.
What the research found
The 2014 work found bedtime procrastination was associated with insufficient sleep and with fatigue, which is unsurprising, and with general self-regulation measures, which is more interesting: people who reported difficulty following through on intentions in the daytime reported the same at night.
Later work has consistently found evening chronotypes are more affected, and that the behaviour is more about failing to start the process of going to bed than about being unable to sleep once there. That distinction matters. The problem is upstream of the bed.
How it differs from the revenge kind
They get merged and they have different motors.
Bedtime procrastination is inertia. There is no reason to stay up and also no moment where stopping happens. It is closest to any other procrastination: the aversive task is the transition, not the destination.
Revenge bedtime procrastination has a motive. The day belonged to other people and these hours are the only ones that are yours, so you take them deliberately, knowing the cost. That is a different problem with a different answer, and it is covered in revenge bedtime procrastination.
The tell is how it feels. Inertia feels like nothing. Revenge feels like something you are owed.
Why phones are so good at it
Going to bed is not one action. It is a chain: put the thing down, stand up, bathroom, teeth, lights, lie down. Every link needs starting, and the first one is the hardest.
A feed removes the natural prompt to start that chain. Television has episodes ending. A book has chapters. A feed has nothing, which means the moment where you would have noticed the time simply never arrives. The structural reason is in why infinite scroll works, and the whole circuit is in the doom loop.
Then there is the second layer, where you are in bed with the phone, technically asleep by the clock and not asleep at all. That is junk sleep, and the room version is the phone in bed.
What helps
Set an alarm for putting the phone down, not for sleeping. The failure is at the start of the chain, so the prompt has to be there.
Make the first link trivially small. Not "go to bed". Stand up. The rest follows more easily than it looks from the sofa.
Do not aim at the total. Cutting fifteen minutes is a better target than an hour, and it survives a bad week, which an hour does not.
Get a moment of contact inside the scroll itself. The reason none of the above fires is that at 11:40pm nobody remembers any of it. Something has to arrive from outside, which is the case made in the 2am scroll.
That arriving thing is what reCalm is. It shields the apps that eat the hour, asks for one breath when you open them at 11:40pm, and lets you through every time. If you do nothing at all, the shield stands down by itself after 15 minutes, so it can never turn the night into a fight.
Frequently Asked Questions
What is bedtime procrastination?
Going to bed later than intended when nothing external is preventing you from going. The definition comes from a 2014 study by Kroese and colleagues.
What is the difference between bedtime procrastination and revenge bedtime procrastination?
Bedtime procrastination is inertia with no motive. The revenge variant is deliberate: taking back hours from a day that belonged to other people, with the cost accepted in advance.
Why do I stay up late for no reason?
Usually because the chain of actions that leads to bed never gets started, and a feed removes every natural cue that would have started it.
How do I stop delaying bedtime?
Prompt the start of the chain rather than the sleep itself, make the first step small enough to be trivial, and arrange for something to reach you during the scroll, since that is the moment you will not remember any plan.