Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good Stuff

This is a great video for those who have practiced the 1st series astanga before. If you never have I don't recommend it! It is not for beginners or anyone who is not practiced yoga before. And I do think even if you practice at home you should practice under a teacher every so often. It is hard to get good at yoga without guidance and can be dangerous. If you haven't practiced in awhile I suggest doing only the standing posses the first day and easing your way into the whole practice. I am above average on the fitness scale, I had not practiced in awhile and I was very sore for quite a few days. David's instruction is great! Have fun!