What is pursed-lip breathing?
Pursed-lip breathing is mainly taught to people with COPD and other lung conditions that cause breathlessness. Exhaling through a small opening creates mild resistance and may help keep airways open longer and release trapped air.
It is not an endurance test and you should not blow hard. The goal is a gentle exhale that lasts longer than the inhale. Learn it at rest before using it while walking or climbing stairs.
How to do it step by step
- 1
Sit down and relax your neck and shoulders.
- 2
With your mouth closed, inhale slowly through your nose for about 2 counts.
- 3
Purse your lips as though whistling or gently blowing out a candle.
- 4
Exhale gently through your mouth for about 4 counts. Do not force the air out.
- 5
Repeat until your breathing settles, or follow your clinical care plan.
Possible benefits and what the evidence says
Slower exhalation
Reduces breathing rate and allows more time to release air.
Breathlessness control
The American Lung Association teaches it as a practical tool for people with chronic lung disease.
During activity
Once learned at rest, it can be paired with movement: inhale before effort and exhale through pursed lips during it.
How to use it sensibly
Learn at rest
Practise 5–10 minutes when comfortable so the pattern becomes familiar.
While moving
Do not hold your breath; breathe out during the hardest part of a movement.
Use a care plan
Ask your clinician to incorporate it into your COPD, asthma or lung-disease plan.
Common mistakes
- Blowing hard or puffing the cheeks.
- Emptying the lungs until strained.
- Making the inhale longer than the exhale.
- Using the method to delay urgent care.
Precautions and when to stop
- If breathlessness does not improve, follow your action plan and get medical help.
- Call emergency services for severe or sudden breathlessness, chest pain, fainting, confusion or blue lips.
- Do not change oxygen, inhalers or medication based on this guide.
Frequently asked questions
Must I empty my lungs completely?
No. Exhale slowly and comfortably; an approximate 1:2 ratio matters more than forcing.
Is it for anxiety?
A slow exhale may feel calming, but this method is chiefly taught for breathlessness.
Can I use it during exercise?
Yes if you have learned it and your clinician agrees. Exhale through effort and never hold your breath.
Sources and review
Sources checked on 19 August 2026. Links lead to the original source; Respira summarises the material in original wording.
- Breathing Exercises for Better Lung HealthAmerican Lung Association
Purpose, steps and warnings for people with lung disease.
- Pursed Lip BreathingCleveland Clinic
Clinical uses, practice and safety information.