I'm not sure why a supporter would be posting on this message board, but it doesn't look good.
My mother started doing this meditation. By the way, Maum is just a homonym in Korean for the word "heart". I'm guessing this is make it sound exotic and deep, even though it's a common word in Korean.
My mom started this meditation after visiting a center, which was
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"Cults," Sects, and "New Religious Movements"