Protect from Corona virus
Hold your breath for more than 10 seconds. If you complete it successfully without coughing, without discomfort, stuffiness or tightness etc it proves there is no fibrosis in the lungs, basically indicating no infection.
In critical times, please self-check every morning in an environment with clean air!
Another EXCELLENT ADVICE by Japanese doctors treating COVID-19 cases. Everyone should ensure your mouth & throat is moist, never DRY. Take a few sips of water every 15 mins at least. WHY? Even if the virus gets into your mouth...drinking water or other liquids will WASH them down through your esophagus and into the stomach. Once there in tummy...your stomach ACID will kill all the virus.. If you don't drink enough water more regularly...the virus can enter your windpipes and into the LUNGS. That's very dangerous.
Lastly don't forget to wash your hands every time you get home from shopping.