Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great workout!

This video is really hard, but even after the first couple of times, I can tell it will be very effective. I just had my third baby 4 months ago, and have so much belly flab that I am desperate! After the first two babies, my belly slimmed up on its own, but this time, not happening. Tracy's video works every single muscle and angle of your core. She does give modification for starting out, all of which I used and I still was only able to do half of the workout. This will be challenging for a while. As another rewiever stated, I am really sore, but not so much where I can't move and take care of three kids under three! The video seems to go really fast (the workout is 45 min.) and is very calm and soothing with classical music and Tracy's voice. This is going to be a great workout, and I alreay feel stronger! Thanks Tracy for sharing your expertise! Katie, Washington State