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Re:The physiological effects of slow breathing in the health... by vram22 on Thursday October 22, 2020 @11:12AM (#24858872)
There's a video about it by a doctor (who is into these kinds of things, apart from his regular work) somewhere on YouTube. Saw it some time ago.

Edit: found it:

Watch "How To Perform the 4-7-8 Breathing Exercise | Andrew Weil, M.D." on YouTube

https://youtu.be/YRPh_GaiL8s

Re:The physiological effects of slow breathing in the health... by Biganon on Thursday October 22, 2020 @02:23PM (#24861399)
If that helped him solve Fermat's last conjecture, it can probably help me relax