What is the pursed-lip breathing exercise technique?

Pursed-lip breathing is a respiratory training technique designed to improve lung capacity and breathing control. The specific steps are as follows:

When performing pursed-lip breathing, maintain a sitting or standing position, relax your body, and adopt a comfortable posture. Gently pucker your lips, closing them while leaving a small gap. Inhale slowly and deeply through your nose, allowing the air to fill your abdomen and chest, while feeling slight resistance at your lips. After inhaling, hold your breath for 1–2 seconds, then exhale slowly through your pursed lips, maintaining the sensation of resistance. Repeat these steps, performing 10–20 breaths per session. It is important to keep your breathing steady and comfortable during the exercise—avoid excessive effort or holding your breath. You can gradually increase the intensity and number of repetitions based on your individual lung capacity and breathing ability, but be careful not to overexert yourself or cause discomfort. Pursed-lip breathing can enhance lung capacity and breathing control, and may also provide supportive benefits for individuals with respiratory conditions such as asthma or emphysema.

Note that if you have any respiratory diseases or other health concerns, you should perform this exercise only under medical supervision to avoid adverse reactions or risks. If you experience any discomfort, seek medical attention promptly to prevent complications.