4-7-8 Breathing: Origins, What Is Claimed and Evidence
4-7-8 breathing in plain language: where the name comes from, what small trials found for anxiety, pain and sleep-related outcomes, why the pause needs care, and who should check first.
Content last updated . This page has not been medically reviewed.
What it is and where it comes from
4-7-8 breathing is a counted pattern: the three numbers are counts for breathing in, pausing, and breathing out. Cleveland Clinic says it was popularized in 2015 by integrative medicine specialist Andrew Weil, MD, and that it has roots in the yogic practice of pranayama. [1] We could not read Dr. Weil's own page (the site blocked our request), and we did not find a classical pranayama text for this ratio in the sources we read, so the pranayama link is a statement by one hospital page. Pranayama is a living tradition with its own texts and teachers; see pranayama for it in its own terms.What research shows
Most 4-7-8 studies are small and recent, and many come from nursing research in hospital settings. Control groups are often routine care or nothing, and people know which group they are in, so expectation can contribute.| Question | What the source found | Strength of evidence |
|---|---|---|
| Anxiety before endoscopy | 75 older patients were randomized to a stress ball, 4-7-8 breathing or a control group. Fear and anxiety fell in both active groups; the stress ball group's anxiety drop was larger than the 4-7-8 group's [3] | Promising but limited |
| Anxiety after bariatric surgery | 90 patients: post-test state anxiety was lower in the 4-7-8 group than in the deep-breathing group or the control group [4] | Promising but limited |
| Tinnitus distress and sleep | 48 patients: after 6 weeks the 4-7-8 group's questionnaire scores (including insomnia severity, trait anxiety and perceived stress) fell, while the control group's did not. Both groups had an information session [5] | Promising but limited (small, self-reported) |
| Pain after knee replacement | A single-group study with no comparison group: pain scores fell after the breathing technique [6] | Insufficient evidence (no control group, so natural recovery and pain medicines cannot be ruled out) |
| HRV in healthy adults | In 43 young adults, a short 4-7-8 session changed some HRV measures straight afterward [7] | Physiological finding only |
| Stress and mood in students | In a crossover study of 34 students, 4-7-8 was linked with lower stress and negative affect in women, and a different breathing practice did better in men; HRV indices showed no significant condition effects [8] | Insufficient evidence |
| Versus slow breathing | In 84 students, breathing at 6 breaths a minute raised HRV more than 4-7-8 breathing; no condition meaningfully changed blood pressure or mood [9] | Mixed |
Proper evidence not found for 4-7-8 breathing as a treatment for insomnia disorder: we searched PubMed for 4-7-8 breathing together with insomnia and sleep and found no trial in people diagnosed with insomnia. The tinnitus trial above measured sleep as one outcome in a different condition. A hospital page says 4-7-8 breathing has been shown to decrease heart rate and blood pressure. [1] In the student comparison above, blood pressure did not change meaningfully. [9] Treat that claim as not established.
A gentler alternative
If counted pauses bother you, a version with a longer out-breath and no pause is described on the extended-exhale page. It has its own, separate evidence.Teachers and cost
We did not find a regulator or professional-body page that sets training for teaching 4-7-8 breathing, so proper evidence not found for a qualification. We list no teachers or apps; see breathing apps.Related reading
Box breathing, box breathing vs 4-7-8 vs paced breathing, and breathing exercises for sleep.Frequently asked questions
Who invented 4-7-8 breathing?
Cleveland Clinic says Andrew Weil, MD, popularized it in 2015 and that it draws on pranayama. [1]
Does 4-7-8 breathing help you sleep?
Proper evidence not found in people with insomnia. One small tinnitus trial lowered insomnia scores. [5]
Does it lower anxiety?
Small randomized trials around surgery or procedures found lower anxiety than routine care. [3][4]
Is it better than slow breathing?
Not in the one comparison we read: 6 breaths a minute raised HRV more. [9]
Is the breath-hold dangerous?
We do not recommend long holds. Dizziness and tingling are signs to stop. [2]
More details: evidence, limits and cautions
The details behind this page: cautions, limits of the evidence and where sources disagree. Open any note to read it.
Safety first
The 4-7-8 pattern includes a pause between the in-breath and a long out-breath. We do not give the counts or a hold instruction on this page, and we do not recommend long breath-holds. Cleveland Clinic says people first learning it may feel a little lightheadedness or shortness of breath. [1] Overbreathing causes dizziness, tingling and a feeling of not catching your breath. [2] If you feel any of these, stop and breathe normally. Stay seated or lying down, and never practice while driving, bathing, swimming, near water or at heights. See breathwork safety.
Who should check first
NCCIH reports rare cases where relaxation techniques caused or worsened symptoms in people with epilepsy, some psychiatric conditions, or a history of abuse or trauma. [10] The pause makes extra care sensible for anyone with asthma, COPD, heart conditions, panic disorder or pregnancy. The sources we read do not state who must avoid it, so this is general caution. Ask a clinician. Breathing practice should never replace medicines or delay care for ongoing insomnia, anxiety or pain.
References
- Cleveland Clinic, 4-7-8 Breathing Method For Sleep and Relaxation. Health Essentials, hospital patient information. Read 2026-10-22.
- MedlinePlus Medical Encyclopedia, Hyperventilation. U.S. National Library of Medicine. Read 2026-10-22.
- The effect of stress ball and 4-7-8 breathing technique on preprocedure fear, anxiety, and physiological parameters in elderly patients undergoing endoscopy: a randomized controlled study. Gastroenterol Nurs 2026. PubMed 42715135. Read 2026-10-22.
- The effect of deep breathing exercise and 4-7-8 breathing techniques applied to patients after bariatric surgery on anxiety and quality of life. Obes Surg 2023. PubMed 36480101. Read 2026-10-22.
- The effect of 4-7-8 breathing exercise technique on tinnitus handicap, psychological factors, and sleep quality in tinnitus patients: a randomized controlled study. Brain Behav 2026. PubMed 41676854. Read 2026-10-22.
- 4-7-8 breathing techniques make it possible to reduce pain associated with total knee arthroplasty. J Perianesth Nurs 2026. PubMed 40742342. Read 2026-10-22.
- Effects of sleep deprivation and 4-7-8 breathing control on heart rate variability, blood pressure, blood glucose, and endothelial function in healthy young adults. Physiol Rep 2022. PubMed 35822447. Read 2026-10-22.
- Acute psychophysiological effects of 4-7-8 and Nadi Shodhana breathing: a randomized crossover study. Appl Psychophysiol Biofeedback 2026. PubMed 42771122. Read 2026-10-22.
- Comparing the effects of square, 4-7-8, and 6 breaths-per-minute breathing conditions on heart rate variability, CO2 levels, and mood. Appl Psychophysiol Biofeedback 2025. PubMed 39864026. Read 2026-10-22.
- NCCIH, Relaxation Techniques: What You Need To Know. U.S. National Institutes of Health. Read 2026-10-22.
Education, not medical advice. This page is for general information. It does not diagnose or treat any condition and is not a substitute for care from a qualified health professional. Natural does not automatically mean safe. Ask a clinician or pharmacist before changing your care, especially if you take medication, are pregnant or breastfeeding, or have a health condition.