Breathing is a fundamental yet often overlooked aspect of health. Proper breathing techniques can enhance lung function, strengthen immunity, and even help regulate blood glucose levels, demonstrating the powerful connection between mindful breathing and overall well-being.^1,2,3

Among various breathing exercises, Pursed Lip Breathing (PLB) is particularly effective in managing respiratory conditions and improving breath control. This technique prolongs the exhalation phase, creating a slower, more controlled breathing pattern. Doing so enhances oxygen exchange, reduces air trapping in the lungs, and promotes relaxation.^4,11

PLB is widely used in chronic obstructive pulmonary disease (COPD) and asthma management, and it has gained attention for its role in recovery from COVID-19. Additionally, it serves as a helpful tool for individuals experiencing shortness of breath due to anxiety or stress.^11,13

This article provides a step-by-step guide to performing PLB, explains its scientific benefits, and highlights when and how to use it effectively for improved respiratory health.

What is pursed lip breathing?

Pursed-lip breathing is a technique that helps control the exhalation of breath. It involves inhaling through the nose and exhaling through pursed lips. During this practice, the muscles in the neck and shoulders remain relaxed. You should breathe slowly and deeply through your nose, then gently exhale through rounded lips. The positive pressure in the upper airway moves to the lower airway, which helps prevent blockages in the bronchial tubes and stops secretions from building up. This technique improves breathing efficiency and reduces shortness of breath.^4,5

Benefits of pursed lip breathing

Improves oxygen exchange

By slowing down the exhalation process, pursed lip breathing aids the lungs in removing carbon dioxide more effectively, thereby improving oxygen uptake.^8,9​

Reduces shortness of breath

This technique helps keep the airways open longer, reducing breathlessness and making breathing more manageable, especially for individuals with COPD or asthma^.​7

Enhances exercise performance

Many people with lung conditions experience breathlessness during physical activity. Incorporating pursed lip breathing while exercising can improve endurance by optimizing oxygen flow.^​9,10

Promotes relaxation and reduces anxiety

Controlled breathing techniques, including pursed lip breathing, activate the parasympathetic nervous system, which helps reduce stress and promote relaxation.^​14

Supports long-term lung function

Regular practice of pursed lip breathing can help maintain lung function and reduce flare-ups in individuals with respiratory conditions.​

Recent studies have highlighted the benefits of combining pursed lip breathing with diaphragmatic breathing for individuals with COPD. The results indicate improved lung function, increased exercise capacity, and easier breathing, suggesting that these techniques can significantly enhance the quality of life for those with COPD.⁵ Additionally, another study 

focusing on pursed lip breathing found that when COPD patients used this technique during exercise, it not only improved their physical performance but also helped reduce 

breathlessness.⁶ Collectively, these findings underscore the potential of simple breathing exercises to make a real difference for many people managing COPD.

Why is pursed lip breathing important?

Pursed lip breathing assists in managing shortness of breath by:

• Reducing trapped air in the lungs is common in COPD and emphysema¹³
• Improving oxygen exchange and decreasing carbon dioxide buildup
• Slowing the breathing rate to promote relaxation^​14
• Enhancing exercise tolerance for individuals with respiratory conditions
• Supporting lung function in those with weakened respiratory muscles

By integrating pursed lip breathing into daily routines, individuals can experience significant improvements in breathing efficiency and overall respiratory health.

Step-by-step guide to performing pursed lip breathing

Step 1

Assume a comfortable position

Make sure to sit upright or stand comfortably with relaxed shoulders. Sitting or lying down with your back supported is ideal, but standing in a relaxed manner is acceptable if sitting or lying down is not possible.

Step 2

Inhale through your nose

Take a slow, deep breath in through your nose, letting your diaphragm expand as your chest rises. Counting to two in your head can help ensure a slow, deep intake of air.

Step 3

​Purse your lips

Gently pucker your lips as if you are about to shush someone, often resembling the action of blowing a kiss. Keep your mouth closed except for a small opening between your lips.

Step 3

Exhale slowly through pursed lips

Slowly exhale through the small gap created by your pursed lips. Counting to four in your head can help make your exhale twice as long as your inhale. If it feels more comfortable, you can extend the exhale to longer than four seconds.

Step 4

Repeat the process

Maintain this breathing pattern for several minutes until you feel more in control. Inhale slowly through your nose and exhale through pursed lips, focusing on making each breath deliberate and steady. Take a moment to rest and breathe normally between sessions of pursed lip breathing. Avoid forcing your lungs to empty completely.

Common mistakes to avoid

Correct technique is essential when practising pursed lip breathing (PLB). While this technique offers numerous benefits, it's necessary to perform it properly to avoid any unwanted effects.

• Avoid exhaling too forcefully: Excessive force during exhalation can lead to airway collapse. Maintaining a gentle, consistent exhale through pursed lips is essential to prevent this issue⁴
• Breath holding: Holding your breath before exhaling can increase feelings of breathlessness, so focus on smooth transitions
• Ensure a slow inhalation: Use slow, controlled inhalation to maximise oxygen intake and ensure efficient breathing
• Practice consistently: Inconsistent practice can reduce the effectiveness of PLB, so strive for regularity to gain the full benefits
• Be cautious of prolonged periods of use: Using a PLB for a long time can tire out the muscles we use to breathe. In healthy people, this might lower carbon dioxide levels in the body, reducing blood flow to the brain and increasing the chance of fainting⁴

When and how often to practice pursed lip breathing 

How often should tou practice pursed lip breathing?

Daily practice of pursed lip breathing can improve breathing efficiency over time. 

Try using it:

• During physical activities (e.g., walking, climbing stairs) 
• When experiencing shortness of breath- dyspnea
• During stressful episodes to calm your breathing
• Before bedtime, to promote relaxation and assist in forming regular, healthy sleep patterns

During episodes of shortness of breath, it’s important to implement pursed lip breathing (PLB) right at the onset of dyspnea to help regain control of your breathing. Incorporating PLB during physical activity can also be beneficial in managing dyspnea that may arise during exercise.

Daily practice

Pursed lip breathing may take a little practice before it feels natural. Setting aside time each day to practice may help you feel more confident with the technique. Practising the pursed lip breathing technique for around five to ten minutes, about four to five times a day may make it feel slightly more natural. Once you have mastered the method, it can be used when necessary.

Integration into pulmonary rehabilitation

PLB, when appropriate, is incorporated into comprehensive pulmonary rehabilitation programmes for individuals with chronic respiratory conditions. 

Regular exercise, including breathing exercises like PLB, is crucial for managing COPD and improving quality of life. ​

Additional tips for maximizing effectiveness

• Combination of PLB with diaphragmatic breathing for enhanced lung function​⁵
• Use during stressful situations to promote mental wellbeing. Individuals wishing to manage anxiety and promote calmness can use PLB⁶
• Monitor your breathing and seek professional guidance when necessary. Consult with healthcare providers or respiratory therapists to ensure proper technique and address individual concerns.
• Pay attention to breathing patterns and adjust as needed to maintain effectiveness

Summary  

Incorporating pursed lip breathing into your daily routine can significantly enhance respiratory efficiency, alleviate shortness of breath, and promote relaxation. This simple yet effective technique is particularly beneficial for individuals with respiratory conditions such as COPD and asthma. By practising pursed lip breathing regularly, you can improve oxygen exchange, reduce anxiety, and enhance your overall quality of life. You can improve breathing efficiency, reduce dyspnea, and enhance the quality of life.​

Consistent practice and integrating PLB (Pursed Lip Breathing) into your daily routine can lead to lasting improvements in respiratory health. If you experience any breathing difficulties, it is essential to discuss them with your healthcare professional to ensure that proper diagnosis and treatment plans can be established. If your breathing problems worsen despite practising PLB, seek medical advice. Additionally, anyone unable to breathe should immediately call for emergency assistance.