This question sounds silly but I'm really confused.
I switched to this style about 2 months ago (demonstration starts at 3:26 http://www.youtube.com/watch?v=L-irRGDI46M ) and recently some "new-age" guy in conversation with me said that by practicing qigong it's possible to steal energy from others (people, animals, plants, trees) instead of drawing universal Qi, therefore getting into trouble such as obsession/possession, "negative karma", etc. He called it "energetic vampirism". In fact I feel highly energized after daily practice of qigong, and I stopped doing it in of fear of harming others.
Does theory that by practicing qigong it's possible to steal consciously/unconsciously energy from others is true? If yes, then how can I protect myself so I'll draw only universal Qi?
Regards,
paulkov