Instruct: Classify Amazon reviews into positive or negative sentiment
Query: in depth

Wow! Anyone who does yoga should be reading and reading this book. If you are interested in yoga, are thinking of starting yoga, are currently doing yoga, or are currently teaching yoga...THIS IS THE BOOK that should be in your hands or on your shelf. Asana's or broken up into Beginners, Intermediate, or Advanced chapters. Along with a list of the benefits of each position. It has great instruction of absolutely everything. It even has yoga practices for your eyes! Completely, completely surpasses every other book on yoga, head and shoulders! Of course that is to be expected, because this book is written by an actual indian yogi, Swami Satyananda Saraswati. GET THIS, GET THIS, GET THIS!