Subtle inner practices are taught to an aspirant when they are ready to become involved with working with internal energy, and have to do with preserving the ‘drops of nectar’, removing blockages or stagnation of energy in the chakras, improving the flow of energy, and ultimately producing conditions to allow the flow of energy through sushumna.
Most of this is meaningless to those who are not ready for the teachings, and i don’t consider myself qualified to pass on instructions on this. And i definitely do not consider these instructions to be suitable or relevant to those who are simply practicing yoga as a fitness or mainly physical practice.
However, if you are serious about learning these practices, the most transformation course i have ever undertaken was the Kriya yoga 1 month course in Sweden with Swami Janakananda, and you can read more, or sign up for the course through the website below.
http://www.yogameditation.com/about_us/about_us/swami_janakananda
This is not to be confused with either ‘the Kriyas’, or with certain schools which claim to teach Kriya yoga through correspondence courses.
6 years after i completed this course, i attended another course in a different yoga centre also instructing on Kriya yoga, and although the teacher was very realized, the actual practice i found impossible to ‘get into’ without the surrounding structure of complete silence, very bland food, a lot of karma yoga, and through these conditions the ‘noise that goes through our minds’ was prevented in erupting to external behavior which may distract others from these subtle inner practices. The second place i did the course took what they called the compassionate approach, and allowed people to talk some of the day, and the disturbance of energy this produced prevented me from the pratyahara required for these practices.
One really needs an ashram environment, and there was something like 23 days of silence on the Sweden one month course, in order to go deeper inwards.
Apologies that i am not going to go into details, and i know most of this probably sounds like ‘gobble dee gook’ to those not already working with inner energies, but it is not appropriate that i would do that.
Best Wishes,
Dave