Pursed-lip breathing is a technique used to improve breathing efficiency and increase oxygen intake. It involves inhaling slowly through the nose and then exhaling gently through pursed lips, as if blowing out a candle. This method helps to keep the airways open longer, making it easier to breathe, especially for individuals with respiratory conditions like asthma or COPD. This breathing exercise can be practiced anywhere and is beneficial during physical activity or when experiencing shortness of breath. By focusing on controlled breathing, individuals can reduce anxiety and promote relaxation, enhancing overall lung function and well-being.