The cognitive shuffle, free online For a racing mind at night.
A slow stream of calm, random words to picture as you drift off. Free, no app.
Settings
How it works
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Settle in
Lie down comfortably and dim your screen.
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Picture each word
Press Begin. A new neutral word appears every few seconds; picture it gently, without forcing it.
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Close your eyes
Turn on the voice if you'd rather keep your eyes closed, and let the words carry on.
What is the cognitive shuffle?
The cognitive shuffle is a sleep-onset technique: you picture a stream of random, unrelated, harmless things, one after another. The idea is that the randomness makes it harder for your mind to build the anxious story that keeps you awake, and resembles what your brain does as it drifts off. This is the free, no-app version: press Begin and start.
The science, briefly
The technique, more formally called serial diverse imagining, was developed by cognitive scientist Luc Beaudoin and presented at the SLEEP 2016 research conference. The idea is that picturing diverse, unconnected things may help keep the mind from staying in problem-solving mode.
Read the science guide →Guides
- What is cognitive shuffling? A plain definition, where it came from and who it suits.
- How to do it, step by step The do-it-yourself seed-word method, no screen needed.
- Does it work? An honest look at what the research actually found.
- Printable word list Calm words to print or save as a PDF for your bedside.
- Racing thoughts at night Why your mind speeds up in bed and what to do in the moment.
- How the cognitive shuffle might help How thinking changes as you fall asleep, and why randomness may help.
- How to fall asleep faster Practical techniques for nights when your mind won't stop.
- Cognitive shuffle vs counting sheep Why ordered counting can keep you alert, and why random images may not.
- Why you wake up at 3am What wakes you in the small hours and what may help you drift back.
- Military sleep method vs the shuffle How the two differ and how to combine them.
- A free mySleepButton alternative The same technique in your browser, no app or account.
Questions
What is the cognitive shuffle?
A way of falling asleep by picturing random, unrelated, neutral things one after another, also called serial diverse imagining. Sleep Shuffle shows you the words so you don't have to think them up.
Does it work?
The evidence is limited: one small study found it helped students about as much as an established technique, and related imagery research is supportive. It is a relaxation aid, not a treatment; for long-lasting insomnia, talk to a doctor.
Do I need an app or an account?
No. It runs in your browser, free, with no sign-up. Your settings are saved only on your own device.
Can I use it with my eyes closed?
Yes. Turn on "Speak each word" in Settings and a calm voice reads each word aloud.
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