More interesting is they are working on mechanism to bypass dollar. They will settle deals in their own currencies, perhaps pegged to Chinese renminbi. It is very bad!
Water fasting is by far the best, our body is naturally adapted to it. This "hacking" with oxygen tanks will just ruin your body. Read "The 4-Hour Body" if you want something that works.
I really hate location-based pay. Why should people from East Europe or Vietnam subsidize rich people in SF? If you can not afford your rent talk to city hall, get a van or change city! Do not export your problems to other parts of the world!