Vikrant Fernandes
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Dumbest app! You can hold your breath and check without this app with the help of a digital watch on your phone... Just hold your breath for: 20 secs, your lungs are good. 30 secs, you're talking good care of your lungs. 40 secs, your lungs are in excellent condition. 50 secs, you must be an athlete. 60 secs, are you a scuba diver!
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