You can make yourself cough by taking a deep breath and forcefully pushing air out of your lungs, but the technique matters depending on why you need to cough. A simple voluntary cough works for clearing your throat, while specific breathing patterns are far more effective for moving mucus out of your airways. Below are the methods that respiratory therapists actually teach patients, from the simplest throat-clearing technique to structured breathing cycles used in lung disease management.
Why Your Body Coughs in the First Place
Coughing is a reflex triggered by irritant receptors lining your throat, windpipe, and the branching points of your large airways. When something irritates those receptors (dust, mucus, acid, cold air), nerve signals travel along the vagus nerve to a “cough center” in your brainstem, which coordinates the explosive exhale. Your brain’s higher centers can also override this system, which is why you can suppress a cough in a quiet room or force one on demand.
The receptors respond to two broad categories of stimulation: physical touch (like mucus sitting on the airway wall) and chemical irritants (like capsaicin in hot peppers or acid from reflux). Understanding this helps explain why certain techniques below work. You’re either mechanically pushing air against mucus to trigger the reflex, or using breathing patterns that move secretions into contact with those sensitive receptor zones.
The Basic Voluntary Cough
For a straightforward, deliberate cough:
- Sit upright with both feet on the floor.
- Take a slow, deep breath in through your nose, filling your lungs as much as comfortable.
- At the top of that breath, tighten your abdominal muscles and push the air out sharply through your open mouth.
This produces a single strong cough. It works fine for clearing your throat or dislodging something minor, but it’s not the most efficient way to move mucus out of your lungs. The sudden force can also slam your airways shut before the air has a chance to sweep secretions upward. That’s why respiratory therapists often recommend the huff cough instead.
The Huff Cough: More Effective Than a Hard Cough
A huff cough keeps your airways open longer than a regular cough, which makes it better at pushing mucus up and out. Cleveland Clinic describes the sensation as similar to fogging up a mirror: shorter, more forceful exhales rather than one big explosive cough.
Here’s how to do it:
- Sit on a chair or the edge of your bed with both feet flat on the floor.
- Tilt your chin up slightly and open your mouth.
- Take a slow, medium breath in (not the deepest breath you can manage).
- Exhale forcefully in a “huff,” as if you’re trying to fog a mirror. You should feel your stomach muscles engage.
- Repeat one or two more times.
- Follow with one strong, traditional cough to clear mucus from the larger airways.
One important detail: avoid breathing in quickly and deeply through your mouth right after coughing. Quick inhales can pull mucus back down into the smaller airways and trigger uncontrolled coughing fits. Instead, breathe gently through your nose between huffs.
You can repeat the full sequence two or three times depending on how congested you feel. Many people find this clears their chest far more effectively than repeated hard coughing, with less throat soreness afterward.
The Active Cycle of Breathing
If you’re dealing with significant chest congestion, the active cycle of breathing technique (ACBT) is a structured method used widely in respiratory therapy. It cycles through three phases that progressively loosen and move mucus before you cough it out. The Cystic Fibrosis Foundation recommends it as a core airway clearance method, but it works for anyone with mucus they can’t easily shift.
Phase 1: Breathing control. Breathe gently in through your nose and out through your mouth for about six breaths. Keep your shoulders relaxed and breathe with your lower chest. Pursing your lips slightly on the exhale (like blowing out a candle very slowly) creates a small amount of back-pressure that helps keep your airways open longer. This phase relaxes the airways and prevents them from spasming.
Phase 2: Chest expansion. Take three or four deep breaths in, hold each one for about three seconds, then breathe out gently without forcing the air. The hold lets air sneak into smaller airways and behind plugs of mucus. Some people add light chest percussion (gentle clapping on the ribcage) during this phase, though it’s not required.
Phase 3: Huffing. Perform two or three huff coughs as described above, then finish with one strong cough. Return to the breathing control phase and repeat the entire cycle until your chest feels clearer.
Coughing After Surgery
After abdominal or chest surgery, coughing is important for preventing pneumonia, but the thought of it can be terrifying when you have a fresh incision. The solution is a technique called splinting.
Grab a pillow or a rolled-up blanket and hug it firmly against your incision site. Press it snugly enough to support the tissues without digging in. While holding the pillow tight, take a slow deep breath, then cough strongly at the peak of that breath. The pillow acts as an external brace, reducing how much your incision moves and significantly cutting the pain. It will still be uncomfortable, but the discomfort is manageable, and the alternative (skipping coughing and developing a lung infection) is worse.
Repeat this several times a day, or as often as your care team recommends. The first day or two post-surgery are typically the hardest. It gets noticeably easier as healing progresses.
Devices That Help You Cough Productively
If you have a chronic lung condition like COPD or cystic fibrosis, handheld oscillating devices can make your coughs far more productive. These small tools (brands like Aerobika and Flutter are common) work by creating resistance and vibration as you exhale through them. The resistance pushes air into spaces behind mucus plugs, while the vibrations loosen sticky secretions from airway walls and thin them out so they’re easier to move.
You breathe in normally, then exhale steadily through the device. After several breaths, you follow with a huff cough or regular cough. Professional guidelines from the American Association for Respiratory Care note that if you can already clear secretions with a regular cough, you don’t need these devices. They’re most valuable when your cough is weak or your mucus is unusually thick and stubborn.
When Coughing Becomes a Problem
Forceful, repeated coughing isn’t without risks. Each hard cough creates a spike of pressure inside your chest that temporarily reduces blood flow back to your heart. In rare cases, prolonged coughing fits can cause cough syncope, a brief loss of consciousness caused by that drop in blood return and a reflexive drop in blood pressure. This is uncommon in people who are deliberately coughing a few times to clear mucus, but it’s a real concern with prolonged, uncontrollable coughing bouts.
Other complications of excessive forceful coughing include sore or bruised ribs, throat irritation, urinary incontinence, headaches, and in extreme cases, cracked ribs (particularly in people with osteoporosis). The huff cough technique reduces these risks because it generates less explosive pressure than a traditional hard cough while still being effective at moving secretions. If you find yourself needing to cough forcefully many times a day over weeks, that pattern itself is worth investigating rather than just managing with technique.