|Sri Babaji, the Kriya yoga master|
Kriya yoga has contributed immensely to the ease of "handling" (for the lack of a better word) the central channel.
I would wholeheartedly recommend the advanced Kriya yoga practice as a preliminary and additional sadhana to the Highest Yoga Tantra.
I was initiated into advanced technique called Kriya Yoga in 1993. I have performed it for around ten years, sometimes up to two hours a day.
My Master said to me: Kriya Yoga is for people with a lion heart.
I agree, Kriya Yoga is not for beginners or for those that are not really fully dedicated to spiritual transformation. In practice, that translates to disciplined and really opened heart and deep willingness to surrender to Devi.
I was introduced to four levels of Kriya Yoga practice.
I practiced Kriya yoga each day for years, at first only a few minutes as its power is truly staggering. I started by doing the first Kriya, and then slowly moved on to second Kriya.
The Second Kriya, as I see it, employs powerful and efficient mudras and bandhas: mula bandha, shambhavi mudra and specific breathing. It is also used as a process for leaving a body at the time of physical death. I spent hundreds of hours performing the sacred techniques until I was allowed to move on to third Kriya. Second Kriya for me is at least twenty times more effective then the first Kriya.
The Third Kriya, as far as I can see, is even more powerful and efficient. It is in two parts and it employs complete mula bandha, shambhavi mudra, bandha traya, retention of breath and of course, a specific kind of breathing and directing of attention. It is a mighty tool, far beyond anything words are able to convey. I must have spent hundreds of hours performing this Kriya alone.
About the Forth Kriya, my Master has said: “This is a way to God.”. And it truly is. It employs powerful combination of aforementioned mudras and bandhas, sacred mantra Aum and retention of breath. Even during the Forth Kriya samadhi manifests easily and effortlessly, what to speak after the Kriya practice.
An authentic Kriya yoga initiation is a must.
There are various lineages existing currently on this plane. If inspired, maybe one can seek initiation from organizations through the links: