Road to Yoga Day : Linga Mudra (Increasing O2 level)
Disclaimer : This is a complementary practice to step up the O2 levels in the body. If you find any discomfort, please reach out to a doctor/hospital
(this video is in Tamil. Not able to locate the original link from IIT Madras website or elsewhere)
Nevertheless, we can give an attempt to learn & practice this mudra during this testing time
Here is the mudra explanation in English

How to do: Formed by inter-locking the palm and keeping the left thumb erect, pointing upwards
Other Key Benefits:
- Ailments caused due to over production of mucus (சளி) such as wet cough, cold, sinusitis can be cured
- May help in relieving breathing difficulty
Guidelines for Mudra Therapy
- Offer your prayers to Istha/Kula Devatha and start the practice
- Fingers not actively involved in the mudra should be comfortably straight
- Mudras can be performed by anybody and facing any direction. Mudras are universal
- When a problem is resolved, the specific therapeutic mudras are to be discontinued