Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A gimmick

I don't recommend this book at all. it is not at all helpful to the average Western reader to begin to properly understand Qigong. Every time it begins to get interesting, the author refers to to another publication of his that deals (according to him , because I didn't fall for it) with the subject. I dropped it two thirds of the way, when I realized I was wasting my time.