How does it feel to get out of breath in COPD? Air stacking & dynamic hyperinflation in COPD 

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Getting out breath (dyspnea) is the most common symptom of COPD. Simple activities can become difficult. This happens due to a process called Dynamic Hyperinflation - when too much air stacks inside the chest making it difficult and uncomfortable to breathe.
By applying proper breathing techniques, people can do better.