Here's a video from an organization called Holy Yoga:
These are clearly some sincere and thoughtful woman who believe they're much closer to God because of this yoga class; these are not wackos trying to trick people out of their money (like too many of the exhibits here at the Museum). However, if the actual content of what is said in this video is carefully examined, it portrays a mystical, feelings-based version of Christianity that cannot co-exist with the Bible. These woman believe the Bible is insufficient, even though they would never actually say it. God gave us His Holy Word, he did not give us His "holy yoga."
Here is an article (with links to more articles) from fellow-pirate Amy Spreeman on this topic.