☝️
Included here for wider circulation and benefits of the people, and all the MB readers.

Please try it out, it is useful.

Enjoy Breathing, Enjoy Life.

Many thanks to the creator of this video.
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Some say this is a fake testing exercise (however we have verified that it is not so), but I think if it works for your status of health and current feelings, and if it suits your 'breathing-and-holding' trials, then it is good to know how long you are able to hold your breath.

Don't overdo it. Just do it cooly.
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Caution: Of course, holding breadth for 10 sec. is not a corona virus test.
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The following Hindi text doesn't claim anything about any virus, and it doesn't have a word 'virus' in it.
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☝️आपके फेफड़ों की क्षमता का परीक्षण करने का यह एक आसान तरीका है। अपनी सांस खींचें और लाल गेंद को घूमते हुए देखें। नीचे चल रही गिनती को देखें कि गेंद के कितने चक्कर लगाने तक आप सांस रोक पा रहे हैं। जितनी ज्यादा राउंड तक आप अपनी सांस रोक सकते हैं, आपके फेफड़ों का स्वास्थ्य उतना ही बेहतर है।

2 राउंड= सामान्य फेफड़े
5 राउंड= मजबूत फेफड़े
10 राउंड= अद्भुत और अद्वितीय फेफड़े