Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: The Best ab workout you can find

I bought this book way back in '93, when it was first published. At the time, I was into working out in a big way, and the exercises came natuarally and quickly. But now, after becoming a very unathletic person, this book is helping me get back into shape. How? Although the book is awesome based alone on the fact that it has tons of new ways to work out your stomach, there are also great chapters dedicated to proper nutrition, hydration, warming up, and mental wellness. This is a not a "quickie abs" book in any way - it is a "Complete" book of abs and wellness, just like the title says.