Instruct: Classify a given review into positive or negative sentiment.
Query: Don't buy this, there are better out there!!!

I bought this in anticipation of improving my cycling technique this winter and was extremely disappointed. The first workout consisted of 4 one minute spin ups and 2 x 2minutes of one leg drills for each side. That was it and it was a 45 minute workout. Besides that you just pedaled. The commentary which which was sparse and unrehearsed was like listening to a Sunday pastor on prozac. If you want better, look into Spinervals recovery and technique.