Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great DVD set. Invigorating, manageable yoga.

Wai Lana is the best. I became way more flexible and toned using these DVDs. It's more challenging than the Easy Beginner Series but still managable for the beginner+. She teaches you which yoga poses are helpful for different body ailments. Fun background settings and crazy outfits and makeup make it entertaining as well.