Complex answer: You could be overexerting yourself for your present physical condition, or you could have new onset of heart or lung disease, such as coronary artery disease, asthma, copd, or heart failure. You could also have a respiratory infection. Go see your doctor.
Answered 12/18/2014
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
4 doctors weighed in across 2 answers
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