Last I checked, I was warning of difficulties ahead of Europe. Before floods and ice storms. Since then things have improved : but I've seen things.
Like this http://www.news.harvard.edu/gazette/2002/04.18/09-tummo.html
I advise not to seek rationalization. Not because there aren't glands involved in this - there aren't, but beside this point, because overthinking chi sterilizes it. You either believe and can,
or doubt and fail.
They don't. And chi can be stored (see holographic data storage, chi is similar to light), and is infinite, clean energy.
Among other goodies.