https://www.google.com/search?q=Hypoxia
https://www.google.com/search?q=soma+breath
https://www.google.com/search?q=specifically+Intermittent+Hypoxia+Training
https://www.google.com/search?q=Shakdvipa
62. In the continent of Sakadvipa the persons named lltavrata, Satyavrata and Anuvrata mutter the names of the Lord of the nature of Vayu (i.e. Wind-god).
63. The Japa is as follows: “May that immanent Lord protect us, the Lord who enters the living beings and divides them with his own bright rays, who controls (all the inner organs) and in whose control lies the entire universe.”
https://freeglobaluniversity.blogspot.com/search/label/Skanda