Instruct: Classify Amazon reviews into positive or negative sentiment
Query: THE book for all aspects of bodybuilding.

A great book for all levels of bodybuilders. From front to back, it's packed with photos of past and present bodybuilders. Most of the content from the last edition is included and even more is added or updated (competition section). From beginner routines to pre-contest dieting tips, this book has it all. If you've ever had a question about bodybuilding, you'll find the answer here.