Start here: the honest default
No treatment is approved for long COVID. Breathing retraining is supportive, but it is also genuinely low-risk and addresses a common, identifiable contributor to breathlessness, which is why it often makes sense as an early step.
It only helps the share of breathlessness that comes from how you are breathing, so the honest framing is narrow: this is for breathing pattern disorder, not for every cause of being short of breath.
What a breathing pattern disorder is
When breathing slips into a fast, shallow, upper-chest rhythm, it can drive breathlessness on its own, independent of the lungs themselves. The diaphragm does too little, the upper chest does too much, and the result feels like air hunger even when the lungs are structurally fine.
Breathing pattern disorder is common in long COVID and, importantly, modifiable. That combination, frequent and fixable, is what makes it worth identifying.
low-moderatethin evidencelow-risk
What the retraining does
A physiotherapist helps you relearn slower, lower, diaphragm-led breathing through specific exercises and feedback. Unlike graded exercise, the work does not require pushing past your energy limit, which matters for anyone with post-exertional symptoms.1
The evidence is graded low to moderate and thin, drawn from patient-reported improvement rather than large controlled trials. The risk, though, is minimal, which shifts the balance in its favor for the right person.
How to tell if your breathing pattern is part of it
Some clues suggest a breathing pattern disorder is contributing to your breathlessness rather than your lungs themselves. Breathlessness that comes and goes with attention or position, frequent sighing or yawning, a rhythm that lives high in the upper chest rather than in the belly, and a sense of air hunger that does not match what tests of your lungs actually show are all common signs that the pattern, not the organ, is the problem.
None of these is proof on its own, which is exactly why an assessment by someone trained to spot the pattern matters before you commit to retraining. But if your lungs keep testing fine and your breathing feels effortful, fast, and high in the chest, a breathing pattern disorder is a reasonable and treatable thing to have checked, and identifying it can spare you from chasing causes that are not there.
What the work actually involves
Retraining is undramatic by design, which is part of its safety. It usually means learning to slow the breath, shift it lower into the diaphragm rather than the upper chest, and let the exhale lengthen, practiced gently with a physiotherapist's feedback and then built into ordinary daily life rather than performed as a strenuous exercise.
Because it does not demand exertion, it sits apart from the graded-exercise approaches that can harm people with post-exertional malaise. That distinction matters: this is low-load work that retrains a habit, not conditioning that pushes your capacity. It should still be paced if you have PEM, since overdoing anything can trigger a crash, but the work itself is built to be gentle.
Matching expectations to the mechanism
The honest framing is narrow on purpose. Breathing retraining only helps the share of breathlessness that comes from how you are breathing, so it will ease pattern-driven air hunger and do little for breathlessness coming from impaired gas transfer, vascular problems, or deconditioning. That is why a proper assessment should come first, so you are not retraining your breathing while a different cause goes unaddressed.
Kept in that lane, it is one of the more attractive options on this map: low-risk, accessible, and aimed at a common, identifiable, modifiable contributor. The evidence is graded low to moderate and thin, drawn from patient-reported improvement rather than large controlled trials, but the minimal risk shifts the balance in its favor for the right person. Match your expectations to the mechanism and it can be a genuinely useful piece of a fuller plan.
What to weigh
Because it only helps breathing-pattern-driven breathlessness, a proper assessment should come first, so you are not retraining your breathing while a different cause goes unaddressed. And even gentle breathing work should be paced if you have post-exertional malaise, since overdoing anything can trigger a crash.
What we don't know
Honest about the edges of the evidence. These are open questions, not settled answers.
- How much of long COVID breathlessness is breathing pattern disorder versus lung, vascular, or autonomic causes.
- Which retraining methods and intensities work best.
- How durable the gains are once formal sessions end.
- How to combine breathing work safely with rehabilitation when PEM is present.
- Whether it helps the breathlessness that comes from impaired gas transfer rather than pattern.
- Which patients are most likely to respond.
What this means for you
If you are breathless and have been told your lungs look fine, ask whether a breathing pattern disorder has been assessed. It is one of the more treatable contributors, and a referral to a physiotherapist experienced in it is a low-risk place to start.
Keep your expectations matched to the mechanism. Breathing retraining can meaningfully ease pattern-driven breathlessness, but it will not fix breathlessness coming from another source, so it works best as one targeted piece of a fuller assessment.
References
Each reference links to the source on PubMed, PMC, or the publisher.