Greetings; Personally I've worked with my chackras and now am working with the Kaballa within myself. The chackras of the eastern systems are using the middle path of the Kaballa. Root/sexual/clan, social, energy, love/heart, intellect/mind, psychic and lastly spiritual chackras. In the Kaballa, the western hermetic system there is Malkut/Earthing, Yesod/inner dream astral realm, Tiphereth, heart/beauty, and Kether, original essence. The middle path. I have expressed these in this way to show in this comparisson that there is no inter-related mapping of the two systems. Including the other two pillars, mercy and severity, have nothing to do with the two paths being similar in any way. Any similiarity is simply not possible to make along this line of thought. The only similarity of the two systems is that the middle path of Kaballa and the chackras system both have to do with the electrical/fluid/chemical/magnetic path of following the spinal cord system throughout the body. At these places along the spine there are nexus (major groupings) of nerve branches which the practitioner allows for the feeling of occuring along the spind and forward of the spine to the front of the body about three inches. This location is where the practitioner "feels" the location of the energies involved in locating in those areas for that Chackras/Sephirot(Kaballa). Once the practitioner locates these centers by allowing through faith and belief and centered concentration on the area it becomes obvious that the areas do not correlate to any actual physical organ except that they root from the spinal cord directly. So, that is the feeling of centering concentration on those areas. It is mixing apples and oranges to bring this fact into the discussion of what Bardon is discussing in the IIH discussions of focused concentrated meditation on specific areas of the body. Bardon is speaking specifically about generating gathered/concentrated energies to actual physical organs of the body, be they muscles, bones, skin, nerves, stomache, spleen, heart, brain, etc. One may generate energies in all of the specific singular areas of the body, organs and all "EXCEPT" the heart muscle and the brain neuro mass. That is all he is cautioning about. When one concentrates on collecting specific energies into the organ of the heart it will conflict with the natural electric/magnetic functioning of the actual organ. The same with the brain neuro mass. So, instead of concentrating actual energies into the organ specifically he is directing the wise practitioner to caution and to instead focus energy into the general area. This difference alone, the general area instead of the specific organ is enough to make all of the difference in the world, in the practioners life. So, one meditates in the area below the end of the sternum, which is about 2 to three inches to the right of the heart, or one meditates on the entire chest area. Both methods "exclude" direct concentrated energies from the heart muscle itself. The same with the brain, one practices attracting energies to the neck, the skin, the scalp, the ears, the eyes, the nose, the muscles of the mouth and cheeks, forehead, "instead" of concentrating energies into the mass of neuro mass of the brain itself. What the caution is all about is like giving a caution of not pouring a can of gasoline onto a burning fire. You will simply probably burn yourself up. As to the heart chackras one would do best to concentrate using a specific system of eastern teaching and follow it explicitly. The same with the western hermetic sciences, choose one system and follow it completely. It becomes difficult in working with two systems at once. I know, theoretically since the subject is the same one single human being in all systems, they ought to correlate in different cultures, equalling about the same because simply the same body system is being worked upon. But this is not the case, as different cultures bring an entirely different set of working tools to the same workshop. They accomplish the same results, just using different tools and setting up the workshop differently. If your concern is the heart chackras I would suggest you choose and follow a specific system. Find out within and for yourself where on the spinal column you "feel"/find the energies of the heart chackras, and follow it out to where it generates heat in your chest. Both the root in the nerve ganglion nexus on on the spine and the blossoming sphere of energy in the chest are the heart chackra. The same with the other chackras. I Wish You Well, Chuck