Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Wonderful DVD!

I've tried a couple workout DVDs in the past and didn't think they were very fun or effective. However, this DVD is great! After the very first try I could already feel my muscles complaining. It has 3 different levels-- about 20 minutes each. I've only done level 1 so far but it's so much fun already-- fun in the way that you know it's working because you can FEEL it, but it's not so complicated that you feel like giving up not long after starting. Jillian is a great trainer; she's supportive and encouraging the whole way through while at the same time she's very strict about the routine.I think this DVD is a wonderful addition to anyone's collection :) It's made me want to try out her others!