Quick answer: cognitive shuffling has small, early evidence for helping people fall asleep, and cyclic sighing improved daily mood in a 2023 trial but did not change measured sleep. Both are free to try tonight, and I would treat them as low-risk experiments rather than proven sleep fixes. This is general information, not medical advice.
Contents
Method One: Cognitive Shuffling
Cognitive shuffling was developed by Dr. Luc Beaudoin, a cognitive scientist at Simon Fraser University (CNN Health via ABC17). You pick a random, emotionally neutral word, then think of other words starting with each of its letters for about 5 to 8 seconds each, or visualize them. The words should stay unrelated, and trying to control the randomness reduces the effect.
Evidence: in a 2016 study by Beaudoin’s team, 154 college students were assigned to standard pre-bedtime treatment, a formal version of cognitive shuffling, or both. The shuffling group was more likely to improve sleep quality, difficulty falling asleep and presleep arousal. The article notes the sample was small, that research is limited, and that Beaudoin owns companies selling products based on his research (CNN Health via ABC17).
Practical notes from the same article: most people fall asleep within 5 to 15 minutes; if you are still awake after about 20 minutes, get up and do something calming for 20 to 30 minutes, then try again. Try it for several nights before judging, and it does not replace CBT-I or medical advice for insomnia.

Method Two: Cyclic Sighing
In the Stanford-led randomized trial, participants practiced one daily 5-minute session for 28 days. The breathwork groups were cyclic sighing (30 people), box breathing (21) and cyclic hyperventilation with retention (33), compared with 24 people doing mindfulness meditation. The study was fully remote, ran from June to September 2020, and most participants were Stanford undergraduate psychology students (Cell Reports Medicine 2023).
The pattern: a slow inhale, then a second, shorter inhale to fill the lungs, then a slow, full exhale, repeated for 5 minutes. Ideally both inhales are through the nose and the exhale through the mouth. The paper gives no exact seconds for each phase, so there is no official count to follow.
What the Numbers Showed
- Positive affect. On a 10 to 50 scale, the mean daily pre-to-post change was +1.89 for cyclic sighing and +1.22 for mindfulness. In the mixed-effects model, breathwork as a whole and cyclic sighing specifically were both significantly higher than mindfulness (Cell Reports Medicine 2023).
- Negative affect and state anxiety. All groups improved, with no significant differences between groups.
- Respiratory rate. Cyclic sighing showed a significantly greater reduction than mindfulness.
- Sleep. Wearable-derived sleep hours, sleep efficiency and sleep score, and a questionnaire on sleep-related daytime disturbance, showed no significant changes in any group.
So the trial supports cyclic sighing as a mood practice, and it does not show a sleep effect. The authors list limits: the study was exploratory and registered retrospectively, delivery was remote so practice could not be controlled, follow-up was only four weeks, and group sizes were small. One author became an advisor to the wearable maker WHOOP in June 2022.
A Simple Way to Try Both
This routine is my own suggestion, not something the studies tested together:
- If your body feels wound up, try five minutes of cyclic sighing first, since that is the dose the trial used.
- If your mind is looping, try cognitive shuffling in bed.
- Write one line each morning (what you did, and how the night felt) for a couple of weeks to see which, if either, helps you.
- Try each for several nights before judging, as the CNN article suggests.
Let a chatbot tally the log. The averages are simple arithmetic, so a chatbot can do them, as long as it is told not to judge the methods. Remove your name before pasting.
Below is my two-week sleep log. Each row has the date, the method I used that night (SIGHING, SHUFFLING, or NONE), and my own estimate of how many minutes it took to fall asleep.
[paste the log]
Please:
1. For each method, count the nights and add up the minutes, showing each sum.
2. Calculate the average minutes per night for each method, showing the division.
3. Write the number of nights next to each average.
Rules:
- Use only the log.
- Do not say that any method works or does not work.
- Do not give medical advice or comment on whether my sleep is normal.
- If a method has fewer than 7 nights, write "FEW NIGHTS."
An invented example. Say over 14 nights you logged NONE on 6 nights (40, 30, 35, 45, 30 and 40 minutes), SHUFFLING on 4 nights (25, 30, 20 and 25) and SIGHING on 4 nights (35, 30, 40 and 35). NONE sums to 220, so the average is 220 divided by 6, or about 36.7 minutes. SHUFFLING sums to 100, so the average is 25 minutes.
SIGHING sums to 140, so the average is 35 minutes. The output also tags SHUFFLING and SIGHING as FEW NIGHTS. The 7-night cutoff is my rule of thumb, and these numbers are made up. A gap like this is a reason to keep logging for another week, not proof; it also matches what the studies suggest, since the sighing trial measured mood, not sleep.
When a Clinician Is the Better Next Step
The American College of Physicians’ 2016 guideline recommends cognitive behavioral therapy for insomnia (CBT-I) as first-line treatment for adults with chronic insomnia. According to ACP’s announcement, CBT-I includes cognitive therapy focused on sleep, behavioral interventions such as sleep restriction and stimulus control, and education such as sleep hygiene, and it can be delivered through individual or group sessions, telephone or web-based modules, or self-help books.
ACP describes chronic insomnia as symptoms that cause significant distress or impairment, occur at least three nights per week for at least three months, and are not linked to other sleep, medical or mental disorders. About 6 to 10 percent of adults meet the diagnostic criteria.
If your sleep has been difficult at that frequency, the structured, evidence-backed route is to talk with a clinician about CBT-I. Shuffling and sighing can sit alongside it as comfortable evening habits.
Where Relaxation Habits Fit in the Sleep Guidelines
Cognitive shuffling and cyclic sighing are both relaxation-style habits, so it helps to see how relaxation approaches are rated in general. The National Center for Complementary and Integrative Health (NCCIH) digest on mind and body practices for sleep disorders gives a balanced picture.
- Relaxation techniques: the digest describes “a small amount of low-quality evidence” that relaxation techniques alone can help chronic insomnia. It also notes that the American Academy of Sleep Medicine (2021) conditionally recommends relaxation therapy as a single-component treatment for chronic insomnia in adults, depending on patient preferences, provider qualifications and treatment availability.
- Yoga and tai chi: several studies suggest they may help sleep, but a 2019 VA/DoD guideline found insufficient evidence to recommend for or against either for insomnia.
- Meditation and mindfulness: both the 2019 VA/DoD guideline and the 2021 AASM guideline found not enough evidence to recommend mindfulness by itself.
Two honest points follow from this. First, the digest does not cover breathing exercises as a separate approach, so it does not rate cyclic sighing for sleep, which matches the 2023 trial’s finding of a mood effect and no measured sleep change. Second, the encouraging part is that a professional body does conditionally recommend relaxation therapy for chronic insomnia, so a calming evening routine is a reasonable thing to build, ideally next to the CBT-I route described in the clinician section.
A Night Plan Built From the Studies’ Own Timings
Both methods come with timings in the sources, which you can turn into a simple plan for the evening. The plan below is my suggestion built from those timings: five minutes is the daily dose in the cyclic sighing trial, and the CNN article says most people fall asleep within 5 to 15 minutes, with a break advised if you are still awake after about 20 minutes.
An invented night plan. Say you turn the lights out at 10:30 p.m. You spend 10:30 to 10:35 on cyclic sighing, which is five minutes. From 10:35 you start cognitive shuffling and let it run. By the 5-to-15-minute mark after lights out, which is 10:35 to 10:45, many people are asleep, according to the article.
If you are still awake at about 10:50, which is 20 minutes after lights out, the article’s advice is to get up and do something calming for 20 to 30 minutes, which means returning to bed between 11:10 and 11:20, then try again. The times are made up, and you can shift them to your own bedtime.
Using the plan for several nights before judging, as the CNN article suggests, and noting each morning how long it took you to fall asleep, gives you the log for the chatbot prompt above. After that you can decide which habit to keep from your own numbers instead of from a headline.
Where These Fit Among NIH-Listed Treatments
The NHLBI: Insomnia Treatment page lists three treatment groups for insomnia: cognitive behavioral therapy for insomnia (CBT-I), a 6- to 8-week plan usually recommended first for long-term insomnia and available in person, by phone or online; healthy sleep habits such as a cool, dark, quiet bedroom and a consistent schedule; and medicines. It also advises a consistent wind-down routine, with reading, soothing music or a warm bath as examples. Cognitive shuffling and cyclic sighing are relaxation-style tools that sit alongside those habits rather than replacing them, so if trouble sleeping lasts, CBT-I is the option NHLBI names first.
Setting Expectations for the Two Methods
Both methods cost nothing and ask for only a few minutes. The sources above do not show either one to be a proven sleep fix, so treat them as experiments and keep expectations modest until your own nights show a difference.
Cognitive Shuffling and Cyclic Sighing: Sources
- CNN Health (via ABC17): Cognitive shuffling may help quiet racing thoughts to fall asleep (April 2025)
- Yilmaz Balban et al., Brief structured respiration practices enhance mood and reduce physiological arousal, Cell Reports Medicine (2023)
- American College of Physicians: ACP recommends cognitive behavioral therapy as initial treatment for chronic insomnia (2016)
- NCCIH: Mind and body practices for sleep disorders
- NHLBI: Insomnia Treatment

















