Tummo-meditation is commonly associated with descriptions of intense sensations of body heat, which are a partial effect, rather than a goal, of the practice. Stories and eyewitness accounts abound of yogi practitioners being able to generate sufficient heat to dry wet sheets draped around their naked bodies while sitting outside in the freezing cold, not just once, but multiple times. Observations have also been discussed in medical articles (Ding-E Young and Taylor, 1998). Not unproblematic, Tummo must be practiced in conjunction with appropriate empowerment and under the direction of a traditionally qualified Tantric Guru. Extensive preparation and pure motivation, most specifically bodhichitta, are absolutely essential both to beneficial results and to the avoidance of physical pain an