What is Pursed-Lip Breathing?

2012

Finding: In this crossover trial, adults with stable COPD who don't naturally use pursed-lip breathing walked farther during a 6-minute walk test when they used it, averaging about 35 meters more than when breathing normally, and their breathing slowed by roughly 4 breaths per minute. The biggest gains showed up in people whose walking was most limited to begin with, suggesting the technique may be most useful when activity feels hardest. Notably, participants didn't rate their breathlessness as any better, so pursed-lip breathing here supported how far and how steadily they could move rather than how short of breath they felt. These findings apply to people managing COPD during activity and shouldn't be assumed to boost exercise in otherwise healthy people.

2022

Finding: In a small crossover study of 16 people living with moderate to severe COPD, repeated pursed-lip breathing at rest produced a measurable shift in heart rate compared with ordinary breathing, a sign the practice engages the body's cardiorespiratory system rather than just feeling relaxing. For someone managing a chronic lung condition, this suggests pursed-lip breathing can be a genuine physical tool for steadying breath and heart rhythm at rest. Because the study was small and limited to COPD patients tested in a single session, the results speak most directly to that group, and they don't tell us how the effect holds up over weeks of regular practice.

2015

Finding: In a randomized crossover trial of 40 people with stable COPD, pursed-lip breathing during exercise reduced the amount of air trapped in the lungs and improved how much fresh air they could draw in, along with better blood oxygen levels and a steadier breathing rhythm. For those who responded, this meant more comfortable breathing while staying active. The benefit was not universal, though: some participants saw no improvement and instead breathed less efficiently, so pursed-lip breathing appears to help certain people with COPD more than others, and it is worth testing whether it works for you rather than assuming it will.

2024

Finding: In a small trial with 32 adults living with moderate-to-advanced COPD, pairing pursed-lip breathing with diaphragmatic (belly) breathing eased breathlessness and let people walk farther in a timed walking test more than pursed-lip breathing on its own. Both approaches helped, so pursed-lip breathing remains worthwhile, but adding the deeper belly-breath appears to give it an extra edge for daily activities. If you already practise pursed-lip breathing for shortness of breath, layering in diaphragmatic breathing may be worth trying, ideally alongside a rehab program. Keep in mind this was a single, small study, so the findings are early rather than definitive.

2020

Finding: This review pooled several trials of people with chronic obstructive pulmonary disease (COPD) and found that pairing pursed-lip breathing with diaphragmatic breathing, where you breathe deeply using the belly and lower ribs, improved lung function and let participants walk noticeably farther in timed walking tests. In practice, this suggests that combining the two techniques may ease breathlessness and build stamina more than pursed-lip breathing on its own, though pursed-lip breathing still helped when used alone. Keep in mind the evidence here comes specifically from adults living with COPD, so it speaks to managing a diagnosed lung condition rather than general breathing practice.

2024

Finding: This study set out to turn pursed-lip breathing into a clear, structured home routine for people living with chronic obstructive pulmonary disease (COPD), spelling out a practical protocol: breathing in for one count and out through pursed lips for two, in three 10-minute sessions a day across eight weeks, with an emphasis on emptying the lungs fully on each exhale. For someone considering the practice, it offers a ready-made way to build the habit rather than guessing at timing or frequency. Keep in mind this was work to design and validate the protocol itself, not a trial measuring how much breathing eased or exercise improved, so it shows how to practise consistently rather than proving the size of the benefit. It is also a support for prescribed respiratory care, not a replacement for it.

2005

Finding: In this trial, 69 people with chronic obstructive pulmonary disease (COPD) walked a timed course both with and without pursed-lip breathing. Adding the technique slowed their breathing during the effort, but it did not reliably help them walk further or feel less breathless. If you have a lung condition, this suggests pursed-lip breathing can steady your breathing rhythm during exertion, though you shouldn't expect it to consistently ease breathlessness or boost how far you can walk. These results come from a single trial in people who didn't already use the technique naturally, so they speak to that specific group rather than to breathing practice in general.

n = 60

Finding: This review of breathing exercises for people with chronic obstructive pulmonary disease (COPD) found that in one 60-person study, pursed-lip breathing helped participants walk about 50 metres farther in six minutes, a meaningful gain for someone whose breathing limits how far they can move. Results were less consistent for breathlessness and overall quality of life, which varied from trial to trial, and because most studies did not hide who received which treatment, the benefits may look larger than they really are. No notable side effects turned up, so the practice appears safe to try. Keep in mind that nearly all of this evidence comes from people with COPD rather than healthy adults, so the same gains are not yet established for the general population.

2018

Finding: In a clinical trial of 60 people that included patients with chronic obstructive pulmonary disease (COPD), pursed-lip breathing raised blood-oxygen levels by about 2 percent on average and slightly slowed both breathing and heart rate. For someone living with a lung condition, that points to a simple, no-cost technique that can help you draw in more oxygen and settle your breathing without any equipment. Keep in mind the improvements were modest and measured in people with respiratory disease, so they may not carry over to healthy breathers, and this is a single small study rather than definitive proof.

1996

Finding: In a small study of 11 healthy adults, breathing out slowly through pursed lips lengthened each exhale and stretched out the whole breath, shifting people into a slower, deeper rhythm both at rest and during light cycling exercise. Because slowing the breath this way eases the pressure and narrowing in the airways as you exhale, it can make each breath feel less effortful, which may help explain why people often report breathing feels easier during the practice. Since this was a small experiment in healthy volunteers rather than a large clinical trial, it tells us more about how pursed-lip breathing changes the mechanics of a breath than about long-term benefits for any particular condition.

n = 745

Finding: Pooling 19 controlled trials with 745 people living with COPD, this review found that pursed-lip breathing measurably reshaped the breathing pattern: it slowed the breathing rate, deepened each breath, and lengthened the time spent breathing in and out compared with people who did not use the technique. In practice, that means the method can help someone with COPD settle into a slower, fuller breathing rhythm rather than short, rapid breaths. The same body of research was more mixed on breathlessness itself and on how far people could walk, so pursed-lip breathing reliably changes how you breathe but does not consistently improve those outcomes. The evidence was also rated low to moderate in quality, so these results are best treated as promising rather than settled.

2018

Finding: This meta-analysis pooled 8 studies of people with COPD using pursed-lip breathing during exercise, and found that the technique reliably slowed their breathing, lowering both breathing rate and the total volume of air moved per minute. Even so, it did not translate into a meaningful gain in how far people could walk in six minutes compared with exercising without it. So if you find pursed-lip breathing steadies your breath during activity, that effect is real and consistent, but you shouldn't expect it to reliably extend your walking distance. Keep in mind this looked only at short, in-the-moment use during exercise in adults with COPD, not at longer-term training.

n = 5,479

Finding: This review of 73 randomised trials, covering 5,479 adults living with serious respiratory illness such as COPD or asthma, found that breathing techniques including pursed-lip breathing consistently improved quality of life, with no adverse events linked to the practice. For someone managing breathlessness, that points to a low-risk technique that may help you feel more in control of your breathing day to day. The evidence comes from people with diagnosed respiratory conditions rather than the general public, so it speaks most directly to that group, and a clean safety record across trials does not guarantee the practice suits every individual or medical situation.

2025

Finding: This study helped define a structured way to practise pursed-lip breathing at home: you breathe in gently, usually through the nose, then breathe out slowly through pursed lips so the exhale lasts about twice as long as the inhale, in three 10-minute sessions a day over eight weeks with an emphasis on emptying the lungs fully. For someone considering the practice, it offers a clear, repeatable routine to follow rather than guessing at timing or frequency. It describes how to structure the exercise rather than proving specific health outcomes, so treat it as a practical template and not as evidence that the technique replaces prescribed respiratory care.

2004

Finding: This review of studies in people with stable chronic lung disease (COPD) found that pursed-lip breathing lengthens the out-breath and the whole breath cycle, shifting people toward a slower, deeper pattern. Slowing the breath this way appears to ease the pressure and narrowing in the airways as you exhale, which may be why some people say their breathing feels easier. The evidence here is still limited and mixed rather than conclusive, so treat this as a technique worth trying for comfort, not as a treatment that changes the underlying lung condition.

n = 30

Finding: In a small study of 30 adults with stable, moderately severe COPD, pursed-lip breathing slowed the breathing rate to about 13 breaths a minute, down from roughly 17 during ordinary breathing, while also using slightly less oxygen. In practical terms, this suggests the technique can make each breath more efficient and ease the effort of breathing rather than adding to it. Because the study was small and limited to people with a specific lung condition, it tells us most about how pursed-lip breathing works for those managing COPD, and it does not show any boost to overall energy or fitness.