Huff Cough: What It Is and How to Do It Step by Step
Updated: 6 days ago
Written and medically reviewed by Dr. Baraa Alnahhal, MD · Last reviewed: October 2026 · How we review
Quick Answer: What is a huff cough?
Huff cough is a controlled coughing technique, also called a forced expiratory technique, that uses a deep breath, a short hold and slow but strong exhales to move mucus from small airways to larger ones before one clearing cough. It suits people with COPD, cystic fibrosis or bronchiectasis because it is less tiring and less painful than forceful coughing. [1]
What the research says
Huffing-based breathing clears more mucus in the short term. A meta-analysis of 24 studies in people with chronic sputum production found the active cycle of breathing technique, which ends with huffs (the forced expiration technique), raised sputum wet weight during and up to 1 hour after treatment compared with conventional chest physiotherapy (SMD 0.32), oscillating devices (SMD 0.75) and no treatment (SMD 0.24). (Lewis et al., Respiratory Medicine, 2012) [2]
It works at least as well as other airway clearance methods. An updated review of 11 trials in COPD, cystic fibrosis and bronchiectasis found the technique had an equal or better short-term effect on sputum weight, FEV1 and FVC than other treatments, increased the amount of mucus coughed up and eased breathlessness. (Zisi et al., Heart & Lung, 2022) [3]
People with COPD cough up mucus more efficiently. A systematic review of 8 studies with 390 COPD patients found the technique improved sputum production and cough efficiency, while effects on lung function and blood gases stayed unclear. (Shen et al., European Journal of Physical and Rehabilitation Medicine, 2020) [4]
Key takeaways
A huff cough moves mucus with just enough force to keep your airways from collapsing. [1]
It saves energy, and therefore oxygen, compared with forceful coughing. [1]
The method is a deep breath to about 75% full, a 2–3 second hold, slow strong exhales, then one strong cough. [1]
It helps most in chronic lung conditions that produce extra mucus, and after surgery or injury when coughing hurts. [1]
Drinking fluids and huffing after your bronchodilator make it easier to clear mucus. [1]
How is a huff cough different from a regular cough?
A huff cough differs from a regular cough because it uses controlled breathing to push mucus up, while a regular cough relies on one quick, forceful burst. [1]
That forceful burst can make your airways narrow and collapse. When that happens, the mucus you are trying to clear can get trapped, which makes it harder to bring up. [1]
A huff cough starts deep in your lungs. It carries mucus through the airways without collapsing them, and only then do you cough it out. [1]
Not every cough clears mucus well. That is why a controlled technique like huffing is taught to people who cough often. [1]
Feature | Huff cough | Regular forceful cough |
Force | Just enough to move mucus | Quick and forceful |
Effect on airways | Airways stay open | Airways can narrow and collapse |
Mucus | Loosened and carried upward | Can get trapped |
Energy use | Less tiring; saves energy and oxygen | More tiring |
Comfort | Less painful | More painful |
Who can benefit from huff coughing?
Huff coughing benefits anyone who finds coughing painful or tiring, including people recovering from surgery or living with an injury. [1]
It is especially useful for people with chronic respiratory conditions who make extra mucus and cough often. [1]
Group | Conditions |
Chronic lung diseases | |
Mucus-clearance disorders | |
Infections | Upper respiratory infection, pneumonia |
Injury and recovery | Spinal cord injury, recovery from surgery, other injuries that make coughing painful |
How do you do a huff cough step by step?
A huff cough is done by loosening mucus with a held breath and slow, strong exhales, then clearing it with one strong cough. [1] Follow these steps:
Sit upright. Use a chair or the edge of your bed, with both feet on the floor.
Position your head. Tilt your chin up slightly and open your mouth.
Breathe in. Take a slow, deep breath until your lungs are about 75% full.
Hold. Keep the breath in for 2 to 3 seconds. This gets air behind the mucus.
Huff out. Exhale slowly but strongly. This moves mucus from your smaller airways into the larger ones.
Repeat the huff. Do steps 3 to 5 one or two more times.
Cough once. Follow with one strong cough to clear mucus from the larger airways and bring it up and out.
Repeat the cycle. Do the whole sequence 2 or 3 times, depending on how much mucus you have. [1]
What does a huff cough sound and feel like?
A huff cough sounds and feels like the breath you use to fog up a mirror or steam up a window. [1]
Instead of one big cough, you take smaller but more forceful exhales with your mouth slightly open. The focus is on breathing in, holding the air and controlling the exhale before you cough. [1]
What tips make huff coughing work better?
Huff coughing works better when you breathe calmly after the cough, stay hydrated and time it around your medicine. [1]
Avoid quick breaths after coughing. Breathing in fast and deep through your mouth can stop mucus from moving up and set off uncontrolled coughing.
Drink fluids through the day. Fluids make mucus thinner, and thin mucus is easier to cough up.
Huff after your bronchodilator. Try the technique after using your bronchodilator medicine, or any time you feel congestion in your airways. [1]
What are the benefits of huff coughing?
The main benefit of huff coughing is that it loosens mucus and moves it through your airways instead of trapping it there. [1]
Benefit | What it means for you |
Less tiring | You use less energy, and therefore less oxygen, than with forceful coughing |
Less painful | Coughing hurts less, which helps after surgery or an injury |
Better mucus movement | Airways stay open, so mucus can travel up and out |
Lower infection risk | Clearing mucus matters because buildup can lead to infection |
Learning how to get mucus out of your lungs is important. If mucus builds up, it can lead to infection. [1]
Does huff coughing really work?
Huff coughing works by keeping airways open while mucus moves, something forceful or uncontrolled coughing does poorly because it collapses the airways. [1]
Healthcare providers believe that breathing in and holding the breath lets air get behind the mucus and separate it from the airway walls before you cough it out. [1]
Studies show that when people with chronic lung conditions control their coughing and use assisted cough techniques, they feel less tired afterward. [1] Larger reviews also link huff-based breathing methods to more mucus cleared in the short term (see "What the research says" above). [2][3][4]
When should you talk to a doctor about huff coughing?
You should talk to your doctor about huff coughing if you have COPD or another respiratory condition that makes you cough often. [1]
Your healthcare provider can show you the best way to clear your lungs, and huff coughing may be one of the techniques they suggest. [1] Ask for help, too, if you are struggling to bring up mucus, because mucus buildup can lead to infection. [1] For a broader overview of the condition most linked to this technique, see this COPD fact page.
Huff cough at a glance
Question | Answer |
What is it? | A controlled cough (forced expiratory technique) that moves mucus without collapsing airways |
Main users | People with COPD, emphysema, chronic bronchitis, cystic fibrosis, bronchiectasis, pneumonia |
Position | Sitting upright, feet on the floor |
Breath in | Slow and deep, to about 75% full |
Hold | 2–3 seconds |
Huffs per round | 1 huff, then 1–2 more |
Finish | 1 strong cough |
Rounds | 2–3, depending on mucus |
Best timing | After a bronchodilator or when you feel congested |
Conclusion
A huff cough is a simple, controlled way to clear mucus that costs you less energy and less pain than forceful coughing. By breathing in to about 75%, holding briefly, huffing out and finishing with one strong cough, you move mucus from the small airways to the large ones where it can be cleared. [1]
If you live with COPD, bronchiectasis, cystic fibrosis or another condition that fills your lungs with mucus, practice the steps above and ask your doctor whether huff coughing fits your airway-clearance plan.
Next step: Bookmark this guide, share it with someone who coughs often, and keep learning with our in-depth guides on bronchiectasis and chronic bronchitis.
FAQ
What is a huff cough?
A huff cough is a controlled coughing technique that uses a deep breath, a short hold and slow but strong exhales to move mucus up your airways before one clearing cough. It has just enough force to carry mucus without making the airways collapse. [1]
How do you do a huff cough?
A huff cough is done by sitting upright, breathing in until your lungs are about 75% full, holding for 2 to 3 seconds, then exhaling slowly but strongly. Repeat the huff one or two more times, finish with one strong cough, and do the whole cycle 2 or 3 times. [1]
Why is a huff cough better than a regular cough?
A huff cough is better than a forceful cough because it keeps your airways open, so mucus is not trapped. It is also less tiring and less painful. [1]
Who should use the huff cough technique?
The huff cough technique suits people with COPD, emphysema, chronic bronchitis, cystic fibrosis, bronchiectasis, pneumonia, upper respiratory infections or spinal cord injuries. People recovering from surgery or an injury who find coughing painful can also benefit. [1]
What does a huff cough sound like?
A huff cough sounds like the breath you use to fog up a mirror or a window. It is softer and more controlled than a quick, forceful cough. [1]
When is the best time to do a huff cough?
The best time to do a huff cough is after using your bronchodilator medicine or any time you feel mucus in your airways. Drinking fluids through the day thins mucus and makes huffing easier. [1]
Does huff coughing actually work?
Huff coughing works by letting air get behind the mucus so it can be moved and cleared without the airways collapsing. People with chronic lung conditions who control their coughing report feeling less tired afterward, and reviews link huff-based techniques to more mucus cleared in the short term. [1][2]
When should I see a doctor about mucus or coughing?
You should see a doctor if you have COPD or another condition that makes you cough often, or if you struggle to bring mucus up. Mucus buildup can lead to infection, and your provider can teach you the best way to clear your lungs. [1]
How many times should I huff cough in a session?
Do a few huffs, finish with one strong cough, then repeat the whole cycle 2 or 3 times depending on how much mucus you have. Rest between cycles so you do not get tired or dizzy.
Can huff coughing help after surgery?
Yes. Huff coughing is gentler than a regular cough, so it can help clear mucus when coughing hurts after surgery. Hugging a pillow against a chest or belly incision can make it more comfortable.
Related Reading
Postural Drainage: Techniques for Airway Clearance explains how body positions help drain mucus from the lungs.
Chest Physiotherapy (Chest PT): Techniques, Uses and Benefits covers chest physiotherapy techniques that loosen and clear mucus.
Bronchiectasis: The Widened Airways Condition That Makes Mucus Hard to Clear — Explained explains a lung condition that causes ongoing mucus buildup.
Cystic Fibrosis: Symptoms, Causes, Diagnosis, and Treatment (2026 Guide) covers cystic fibrosis symptoms, diagnosis and daily airway care.
References
Cleveland Clinic. Huff Cough: Huffing, Maneuver, Purpose & How To. Cleveland Clinic. Last updated August 18, 2023. https://my.clevelandclinic.org/health/treatments/8697-huff-cough
Lewis LK, Williams MT, Olds TS. The active cycle of breathing technique: a systematic review and meta-analysis. Respiratory Medicine. 2012;106(2):155-172. PMID 22100537. https://doi.org/10.1016/j.rmed.2011.10.014
Zisi D, Chryssanthopoulos C, Nanas S, et al. The effectiveness of the active cycle of breathing technique in patients with chronic respiratory diseases: A systematic review. Heart & Lung. 2022;53:89-98. PMID 35235877. https://doi.org/10.1016/j.hrtlng.2022.02.006
Shen M, Li Y, Ding X, et al. Effect of active cycle of breathing techniques in patients with chronic obstructive pulmonary disease: a systematic review of intervention. European Journal of Physical and Rehabilitation Medicine. 2020;56(5):625-632. PMID 32397703. https://doi.org/10.23736/S1973-9087.20.06144-4
Medical disclaimer
This article is for general education and does not replace advice from your doctor or respiratory therapist. Ask your healthcare provider before starting any new breathing or airway-clearance technique, and seek medical care promptly if your breathing or cough gets worse.
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