Instruct: Classify an Amazon review into positive or negative sentiment.
Query: skip the intro. customize it. beginners be careful. GOOD SWEATIN'!!

Overall this a good hard workout. The intro, which you can't skip, is annoying on a daily basis. Who wants to see that every day? That part wasn't well thought out by the editor. It seems to be a common complaint. I also wish it were customizable like the Cardio Max DVD. Pay attention to form & your own body cues. Basically, hard breathing means keep on trucking, pain means alter your form (& keep on trucking). I consider myself to be in at least average condition(working out 3-5X/wk)and this DVD was harder than expected, which is pleasantly surprising. I was sore. I've never actually seen Biggest Loser but I now understand why they lose such weight. I have continued to use the DVD but I'm mixing it up with other workouts now because my knees, although I've been careful, are now making noise when use the stairs =:-O. I'm glad I bought this DVD & will continue to use it.