I am skeptical. I have in the past had the onset of Hyperthermia. There were two of us. The other guy had to go to hospital.
So to tell me that people can live out in the cold takes some believing.

But there is a lot in what you say.
Positive thoughts of chi moving about the body would have an effect on the endocrine stystem in a plus way.
I have seen the results of hypnosis from a friend who wouldnt tell lies. He looked as though he has been in a deep sleep. His mind was so clear. If this could be achieved by a person doing it them selves then I am all for it.