Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A good, fast workout

I enjoyed this workout very much. It's only 20 minutes long and seems to fly by, which is nice when you have a limited amount of free time. Leslie is pleasant to listen to and is a great motivator.I was a bit disappointed with the quality of the video tape itself, though. It was staticky and a bit hard on the eyes near the end of the workout (this was the tape itself, though, not the workout) and this was only on the first viewing.