THE SHORT ANSWER
Start here.
A bedtime “brain dump” can be as simple as writing tomorrow’s specific tasks for five minutes, then closing the notebook. In one small sleep-laboratory study, people assigned to write a to-do list fell asleep faster than those writing about completed tasks. That is a useful prompt for a low-effort personal experiment.
01 / DETAIL
What the research actually tested
A randomized study of 57 healthy adults aged 18–30 compared writing a future to-do list with writing about completed activities. Both groups wrote for five minutes before an overnight laboratory sleep recording. The to-do-list group fell asleep faster in that setting.
The study involved healthy young adults and one overnight laboratory visit. Its result is specific to that setting and the writing tasks tested. A short list is easy to try without turning it into a demanding project.
Sources: Scullin et al. — Bedtime writing and sleep onset (Journal of Experimental Psychology: General)
02 / DETAIL
How to try it tonight
Write only the actions that would otherwise keep circling in your mind. “Send the revised file to Alex at 9 a.m.” is more useful than “sort out work.” Put a mark beside the first thing you will do tomorrow, then stop. Do not turn the page into a late-night planning session.
If writing activates you, try it earlier in the evening or choose another quiet activity. The NIH recommends reserving the hour before bed for quiet time; there is no single required ritual.
Sources: National Heart, Lung, and Blood Institute — Healthy Sleep Habits
03 / DETAIL
Make a clean stopping point
Put the notebook somewhere you will see it tomorrow and close it for the evening. If five minutes of writing feels busy rather than calming, move the list to an earlier hour and keep a quieter activity for the final part of the night.
KEEP IN MIND
Key points
- Keep the list concrete and brief.
- The supporting study was small and limited.
- Switch to another quiet activity if writing feels activating.
SOURCE NOTES
References
We link to the public guidance and research behind factual statements. Source material can change; this article was last reviewed by the ACHELESS editorial team on 2026-09-23.
For general information only. This article is not personalized medical advice or a statement of ACHELESS device indications. Read the device user guide and speak with a qualified professional about individual medical questions.
