Instruct: Classify Amazon reviews into positive or negative sentiment
Query: bible of bodybuilding

I have read a lot of bodybuilding books. This book is the most complete and cover very detailed information on bodybuilding. It is more scientific than these arnoid and weider's books. This book includes a lot of different ideas rather than only one person's experience. The content of training and nutrition is excellent and the final chapter of 'question and answer' impresses me. It provides reference to overcome the commonest problem that many bodybuilders encounter.But I disappoint that this book do not describle the content of periodization. Anyway, the book is a essential reference in your library.