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why does my chest feel tight and shortness of breath why does my chest feel heavy and shortness of breath why does my chest feel tight and out of breath why does my chest feel heavy and out of breath why does my chest feel heavy and i have shortness of breath my chest feels tight and shortness of breath why do i have chest tightness and shortness of breath what can cause shortness of breath and chest tightness what causes shortness of breath chest tightness
