Shortness of breath Causes - Mayo Clinic
https://www.mayoclinic.org/symptoms/shortness-of-breath/basics/causes/SYM-20050890?p=1
WEBShortness of breath — known medically as dyspnea — is often described as an intense tightening in the chest, air hunger, difficulty breathing, breathlessness or a feeling of suffocation. Very strenuous exercise, extreme temperatures, obesity and higher altitude all can cause shortness of breath in a healthy person.
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