Being able to withstand extreme colds isn't a pretty useful skill?
I probably should have provided more detail in the post. He claims not only to be be able to withstand cold, but to be able to almost fully regulate his immune and other autonomic systems. He furthermore claims that anyone can learn to do this via his method.
For example, he claims to be able to control his inflammation response. This would be very useful to me, at least. There seems to be some science backing up his claims - he was injected with toxins and demonstrated an ability to control his body's cytokine, cortisol, etc. reaction to the toxins. So when I'm asking for a verdict, I'm sort of asking what people think of the quality of this science.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.