what is a phenomenon when human can not breath
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The phenomenon of normal breathing in a human being comprises of an active inspiratory and a passive expiratory phase. During inspiration, muscles of ribs and diaphragm contracts. Hence, it is an active process. During expiration, muscles of ribs and diaphragm relax. Hence, it is a passive process.
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When you have shortness of breath, you can't catch your breath or get enough air in your lungs. Your doctor might call it dyspnea. It can be a warning sign of a health problem that needs treatment right away. If you're a healthy adult, you breathe in and out up to 20 times a minute.
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