Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Abdominal work too extensive for compromised back

I bought this because of a preview included with another DVD. Preview showed a great Combination of aerobics and approachable sculpt, with a small amount of very minor core work. Even though I do regular moderate core work on my own, I found the sculpt to be mostly abdominal, of which is too difficult for a beginner or someone with a bad back.