First, thank you for all your posts and articles. I have found them to be extremely helpful and inspiring.
Regarding kechari mudra, should it be practiced without the guidance of a guru? In other words, if the tongue can be brought back into the nasal cavity without cutting of the frenulum, can kechari mudra be practice by someone without a guru? If so, how would you recommend incorporating it into a sadhana for somebody working on the steps in Bardon's IIH book, but has also incorporated the other exercises discussed in this article?
Again, thank you for all your help.