Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Liked it! Very helpful during pregnancy.

I had a lot of lower back pain while pregnant, and started taking pilates classes. The instructor also recommended that I buy this DVD and said that it was the best pilates DVD out there since it follows guidelines from the American College of Obstetrics and Gynecology.While it does start a little slow, it has very good exercises and a routine. It really helped my back and I'm so thankful I did it during pregnancy so that once baby was born, I didn't have back issues to then deal with!