I’ve read that in Siddhasana I’m supposed to let my right / left leg’s heel touch the place between my anus and scrotum. However, could anyone be more specific of the direction please? Should the heel touch the place between the scrotum and the anus so hard that I can feel it in my skin or should the heel be just placed in that place, without touching the skin? I’m asking this because I’ve noticed that whether I let the heel touch the skin or not determines a lot about the way I handle my legs.
Also, should Jalandhara-Bandha / neck-lock, be performed after completing pooraka (inhalation) and kept on while during rechaka (exhalation), or should it be enforced even before doing the pooraka?