Some of yoga's practices are clearly dangerous. The whole idea of "emptying yourself" in meditation is the opposite of Christian meditation where you are "filled" with the Holy Spirit. A person who is sitting and chanting a mantra and trying to dispel any thoughts, deliberately empty himself, is like the man in the parable who has a demon which is driven out. The house is clean and swept...and empty. The devil goes out, finds seven devils worse than himself and returns to "fill up" the empty house. [Luke 11:26]
