Comment by Terr_
"It'll blow those Chemists' minds when they start researching Alchemy and they realize the incredible power of mercury and lead to rejuvenate the body and lead to an elixir of youth!"
"It'll blow those Astronomers' minds when they start researching Astrology and the powerful effect of being born under auspicious constellations!"
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If the ancient guru knowledge is so great, what testable predictions does it offer, where "auras" are a causal mechanism?
In other words, not: "Thou must intake the golden aura of oats and fiber by eating some, to counter the dark brown blockage of your Pu-point." The folk remedy might well solve your constipation, but it wouldn't be evidence for the mythology around it.
Proper hatha yoga (not the modern hijacked nonsense) is literally a predictive method to experience deeper aspects of oneself, one part of which is a greater sensitivity to energy movements and corresponding fields.
There is already western research on kundalini, the most potent example of bioelectrical energy, and changes in energy potential experienced by meditators. Not to mention countless empirical self-reports (upon which a good scientist would keep an open mind).
But don't let facts get in the way of your prejudices.