Wild stuff, man. Am new to Steemit and just watched your video. I've always been drawn to Mexico going back even as far as the 1970s and the old Carlos Castaneda thing (I know, a lot of folks say it was all a hoax, but the philosophy still rocks!)
I doubt if I could ever take the fasting thing as far as you have, but I did cut back to just 2 meals a day (and no snacks at all) about a year ago, one morning and one evening. It really has the effect of making me feel more cleansed and alert more of the time, like my body (and mind) have time to do things other than processing food.
One last random thought: "prana" is usually translated as "breath", which is also true of the Chinese "qi" ("chi"). Seems like they are talking about the same thing, "life force". What do you think?
Take care, my man, and thanks for sharing something of your path.