Gleb Muzrukov's book for the first time provides a detailed description of the history, theory and practice of ancient art "Tummo Naljor" - yoga Tummo - the basic practice of the "Six Instructions of Naropa." In the final chapter, for those wishing to recognize and pronounce Tibetan letters correctly, a short introductory course in the Tibetan language is given. The book is illustrated with fragments of a tank and paintings from the author's personal collection.