Asana siddhi
Admittedly nine hours in siddhāsana is a bit hard on the back; today my back hurts a little and is tired. I skipped meditation this morning and took extra rest. The lower back has to work hard. Nevertheless, it is the strengthening of the lower back and the progressive straightening of the upper, where I have had a pronounced curvature since childhood, that has made sitting a long time possible. Needless to say, some proficiency in breath control is also required. The lower back is part of the maṇipūra-cakra zone; where it meets the spine is the seat of the kanda or bulb, which is the central clearing house for all the nadis. Early hatha yoga texts talk about this kanda as also being a seat of the kundalini as much as the yoni-sthāna, which lies between the muladhara and svadhishthana. This may be a source of confusion to some, but if one thinks of the kundalini rising as a two stage affair, beginning in the yoni and then getting a boost from the kanda , one will understand the...