I have reread all your posts including the breath mechanics post and i have been busy joining the bit and pieces of what you have explained in term of simple to under stand way.
Let me jot down what i have understood till know.
Initially use the nostrils to assist the start of breath from the psoas/T12 junction.Imagining breath starting from T12/crura and end at sacrum and exhale return.After rote repetion,try without using the nostrils.
My questions:
1)What do u mean by the "Forward and upward" motion of diaphram.?
Do u mean that when we intitiate the breath at the crura/psoas junction,the rear end of diaphragm expand upwards first and then we apply a small effort in pushing it down with help of psoas.
Is their any tangible feeling of the psoas moving downwards??
2) Show we feel expansion on inhale near the anus/sacrum area or only near the perineum.
3)Is their a feeling of cool air passing through the nostrils when inhaling after mastering the psoas/diaphragm motion or you dont have any movement through the nostrils??