On another forum, someone asked about Tai Chi. This was my answer, slightly amended:
The notion of moving energy within the subtle body is very ancient, and can be found in both the Indian and Chinese traditions.
The ancient Indian texts, as early as 800BCE, talk of raising the 'Brahma force' up through the hita (veins), later known as nadis, and out of the crown of the head, later known as the Sahasrara chakra.
In China, the Daoist mystical tradition, based on the teachings of Lao Tse, had a similar knowledge of the subtle body with their knowledge of chi (energy).
Clearing the subtle body in India included physical exercises that became known as Hatha yoga, and in China similar physical exercises became known as Tai Chi.
And to follow on, when the Chinese notion of subtle energy, or chi, reached Japan at the end of the 19th century, it became ki, thus Reiki (universal energy).
The key point is this: knowledge of the subtle system cannot be divorced from realisation (yoga). So, is the 'door' at the top of the head open?
If yes, then negative energy can be sent out of the subtle body, to be replaced by divine energy.
If no, or not yet, the negative energy cannot easily be disposed off, and hence moves around within the body or is transfered, via subtle attention, to others (as in reiki).
If we can give realisation/kundalini awakening to these subtle energy practitioners (of Tai Chi and of reiki) then that would be good, however meanwhile lets not get caught out by their negative energies.
As always let vibrational awareness be our guide.