The most common symptoms of COVID-19 are dry cough, tiredness and fever. Some people may develop more severe forms of the disease, such as pneumonia. The best way to confirm if you have  the virus producing COVID-19 disease is with a laboratory test.  You cannot confirm it with this breathing exercise, which can even be dangerous. Originally published on the World Health Organization, Emergency, Coronavirus disease (COVID-19) pandemic site under the Mythbusters section.
World Health Organization
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