Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Love it! Be Careful on the Ballet One, though

This is easy to do out of the blue, even if you are not very active. It is very good cardio and has some stretching, ab stuff and strength training, too. It inludes warm up, cool down, and workouts in ballet, jazz, funk, and latin. It is fun and a good way to learn. Each workout changes constantly what muscles you are using so your muscles do not get bored. Sometimes I only have time for one. Today, I did 2 styles. Some of you might be up for doing all of them in one workout! Good for you! I don't have the time, but would like that.Warning: When you get to the ballet section, don't do that stuff she does after she sits down unless you have abs of steel. I did and had to go to the chiropractor 4 times to fix my back.