Instruct: Classify Amazon reviews into positive or negative sentiment
Query: An excelent esoteric review

If you are searching for answers about Yoga, spirituality, kriya etc. then this little book provides some veryinteresting information about the origins of Hatha Yoga and other classical indian texts. This book will provide an explanationof the kechari mudra and the kechari mantra. If you like this kind of stuff then this is a must have.