Instruct: Classify a given review into positive or negative sentiment.
Query: I wonder what kind of PHD does Mr. Jackowski have?

As a Physical trainer with an advanced degree in Exercise Science and several national certifications I find this book egregiously misleading. The author spewes out 'fact' after 'fact' with no scientific basis (except for his own practical experience!). If you buy this book please take his word with a grain of salt. In addition, there are several exercises depicted in this book that will cause more harm then help.The only reason I give this book 2 stars is for his body type descriptions....they are easy to understand and extremely marketable.