What is Natural Breathing?

1995

Finding: When seven people with severe chronic lung disease were taught to deliberately switch to a forced diaphragmatic breathing pattern, their breathing actually became less efficient than their own natural, spontaneous breathing, their chest and abdomen moved less in sync, and their breathlessness tended to worsen. In other words, effortfully controlling the breath was not an improvement here; the body's own unforced pattern did the job more efficiently. This was a very small study limited to people with serious lung disease, so it doesn't tell us much about healthy practitioners, but it's a useful reminder that manipulating the breath is not automatically better than letting it settle naturally.

2015

Finding: This review pooled 25 randomised trials of relaxation techniques in people living with COPD, a lung condition that often brings breathlessness and real emotional strain, and found small but consistent improvements in anxiety, mood and overall quality of life. In practical terms, adding relaxation practices to standard care appears to help some people feel a little calmer and cope somewhat better, though the gains were modest and the quality of the included studies varied. Keep in mind these findings come from relaxation methods broadly rather than Natural Breathing specifically, and were measured in a clinical COPD population, so they point to a gentle supporting benefit rather than a dramatic one.

n = 30

Finding: In this small study of 15 people with COPD and 15 healthy adults, switching from spontaneous, everyday breathing to deliberate diaphragmatic breathing raised lung volumes and blood-oxygen saturation while slowing the breathing rate. In practical terms, actively engaging the diaphragm moved more air with each breath and let people breathe more slowly and efficiently than they did when breathing naturally. It is worth being clear about scope here: the "natural breathing" in this study was simply the resting baseline that diaphragmatic breathing was measured against, so these gains reflect the active diaphragmatic pattern rather than natural breathing itself. With only 30 participants and results reported descriptively, this is an early, small comparison rather than definitive proof.

2020

Finding: This narrative review gathered the current research on slow, diaphragmatic breathing and found that it influences autonomic nervous function, along with the brain and the cardiovascular, respiratory and digestive systems, in ways that point the body toward its calming "rest-and-digest" state. For someone practising unforced, natural breathing, that offers a plausible explanation for why slowing the breath can feel settling. Two caveats matter, though: the review drew on studies of varied and generally modest quality, and it looked at diaphragmatic breathing broadly rather than Natural Breathing specifically, so the findings are best read as evidence for the wider family of breathing practices rather than proof for this technique alone.

n = 1,233

Finding: This Cochrane review pooled 16 trials of breathing exercises in more than 1,200 people with COPD (a chronic lung condition) and found that four to fifteen weeks of practice helped people walk noticeably farther, with diaphragmatic breathing adding roughly 35 metres to a six-minute walking test compared with no breathing exercises. The gains were similar across pursed-lip, diaphragmatic and yoga-style breathing, which suggests the everyday value here is improved stamina and walking capacity rather than a cure. Notably, the review found no reliable improvement in breathlessness or overall quality of life, so the technique should not be expected to consistently ease those symptoms. Keep in mind that this is broad evidence for breathing exercises in a specific clinical group, not a direct test of Natural Breathing itself, and the underlying studies were of low to moderate quality.

2019

Finding: This review pooled randomised trials of breathing exercises in people with chronic obstructive pulmonary disease (COPD), looking at how the exercises affected breathing efficiency, exercise capacity, breathlessness, and quality of life. Across those trials, structured breathing practice was linked to easier breathing and better day-to-day functioning, though the researchers rated the overall quality of the evidence as only low to moderate. Keep in mind that these studies examined diaphragmatic and clinical breathing techniques in patients with lung disease, not the Qigong Natural Breathing practice itself, so the results are best read as encouraging background rather than direct proof that this specific technique works.

2021

Finding: This review pooled randomised trials of breathing exercises in people with chronic obstructive pulmonary disease (COPD) and found that regular practice strengthened the muscles used to breathe in and extended how far people could walk in six minutes, by roughly 28 metres on average. The same review found no reliable improvement in overall quality of life, so stronger breathing muscles and better walking endurance did not translate into people feeling broadly better day to day. Keep in mind that this evidence comes from a specific clinical group and from breathing exercises in general, not from the Natural Breathing Qigong technique itself, so it points to what breath training can do rather than proving results for this particular practice.