After listening to an important briefing at work.
After learning something new while studying.
When you finish a book and find yourself with a little free time.
Do you find yourself reaching for your smartphone without even thinking?
Opening social media, reading the news, watching short videos.
Today, we can fill even the briefest spare moment with new information.
Yet research is beginning to show that, for the brain, time spent taking in no new information has meaning too.
Research on Doing Nothing
In research, resting quietly after learning something, without moving on to another task, is called wakeful rest.
It does not mean sleeping.
You stay awake, perhaps closing your eyes or sitting quietly, while keeping new stimulation to a minimum.
A meta-analysis published in 2025 in Psychonomic Bulletin & Review brought together 37 studies and 63 experiments to examine how wakeful rest after learning affects memory.
The results showed that, compared with doing another task after learning, resting quietly was associated with a tendency toward better memory performance afterward.
Interestingly, this effect was seen not only right after learning, but also in studies that tested memory seven days later.
We tend to think that remembering means actively doing something, but how we spend the time after learning may matter just as much.
Memories Are Not Complete the Moment We Learn Them
Why would doing nothing have anything to do with memory?
The key is memory consolidation.
Even when we learn something new, it is not instantly stored as a stable, long-term memory.
Afterward, the brain continues a process of gradually stabilizing the newly acquired information.
However, if we start processing one new piece of information after another right after learning, that incoming information may interfere with what we just learned.
On the other hand, creating a quiet moment after learning reduces interference from new stimulation.
This is one explanation for why wakeful rest may help us retain memories.
So, Is Reaching for Your Phone Right Away Bad for Memory?
This is where smartphones come into question.
If we look at social media or videos after learning something important, does it undo our hard-earned memories?
In fact, the answer is not so simple.
Current research does not allow us to conclude that looking at a smartphone right after learning weakens memory.
A study published in 2025 in Scientific Reports found memory consolidation not only when participants rested quietly after learning, but also when they used social media.
In other words, the picture is not as simple as this:
Wakeful rest = good
Smartphone = bad
The workings of the brain are not that straightforward.
The point is not to cast the smartphone itself as the villain.
What research can say with more confidence is that resting quietly after learning something may support memory retention better than jumping straight into another mental task.
Modern Life Leaves Little Time for Doing Nothing
The few minutes waiting for a train.
The time spent waiting for an elevator.
The gap between one task and the next.
The wait until your meal arrives.
Moments we once spent simply letting our minds wander are now filled by smartphones.
Of course, that in itself is not a bad thing.
Still, it is clear that our lives now have far fewer moments when no new information comes in.
The meeting ends, and straight to email.
Studying ends, and straight to social media.
You finish a book, and straight to videos.
All day long, the brain processes one piece of information after another.
That is exactly why, at least after learning something important, it is worth giving yourself a few minutes without taking in anything new.
Close your eyes.
Look out the window.
Sit quietly.
That alone is enough.
Is Doing Nothing Really Doing Nothing?
From the outside, it may look as if you are simply spacing out.
It may even feel unproductive, like a waste of time.
Yet inside the brain, processing related to the information you just took in may still be under way.
Doing nothing does not mean your brain is doing nothing.
For those of us surrounded by information every day, this is a point worth remembering.
To remember something, we tend to add even more information.
But beyond that, sometimes making time to take in no information at all can also matter for memory.
After work or study, before you pick up your smartphone, try doing nothing for just a few minutes.
Why not create a small pocket of breathing room in your everyday life?
At La HEAD, we will continue to share research on sleep, rest, and the brain in everyday life in an easy-to-understand way.