Any pointers to the studies?
Any pointers to the studies?
http://en.wikipedia.org/wiki/Tummo#Scientific_investigation
If you're interested in how to perform the actual meditation, this is a great book: http://www.amazon.com/Bliss-Inner-Fire-Practice-Naropa/dp/08...
Tumo is well documented on the process which monks (names including repa indicate mastery) use to practice in the strong cold winds of Tibet. One thing that helps learning is that of necessity.
One of the first things to learn, in order to do tumo, is that of grounding, centering, and shielding. Then, after that, you learn how to go in a strong meditative trance In which you control parts of your subtle energy. Once you learn that, then you can direct the subtle energy in such a way that brings the psychic heat forth.
I also live near Bloomington,IN and also receive help from the Buddhist monestary here. I would recommend that you find a temple and request help along this endeavor.