Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not helping for instruction

I bought this book hoping it would best define Joseph Pilates work and provide instruction to breathe and attain proper neutral spine. Instead, it features Joseph Pilate ponitificating at length on why Contrology is useful for curing all the world's ills, some his deductions are very illogical. I bought this along with Alycea Ungaro's "Pilates in Motion" which is an excellent instructional tool, one which I would highly recommend.