Pursed lip breathing is one of the best exercises for a COVID patient, you can do this in sitting position with crossed legs or bent knees, hands around your ribs. Take a deep breath in through your nose and breathe out gently through your mouth as if you are moving the flame of a candle in front of you but not completely blowing it off.

Source: ahmedabadmirror.com/honing-the-proning/81800488.html

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