I chanced across some interesting material at Leslie Kaminoff’s Breathing Project. An extra from a mailing list discussion blog [MLS: you will need to search the posts, but it does go back to 1999] on breathing flow dissects the three-part yogic breathing instructions that usually talk about filling a glass of water from the button to the top. Kaminoff clarifies that the glass metaphor is erroneous because water is a liquid while air is a gas and they have different flows. And that’s just a sampling of the knowledgeable discussion. I tried to register for the mailing list, but it got bounced back so I don’t know if it still exists, what with the general decline of e-mail’s usefulness because of spam.
On closer examination, I found a web link where I was able to subscribe.