Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent workout & challenging

This is a wonderful workout - both fun and challenging. Lindsay is an excellent instructor with energy and she's not annoying. I enjoy working out with her! I also own a few of her other workouts, but this was my first purchase. This video really target the core from the deep muscles and will challenge anyone at any level. This is also a full body workout in addition to the core which I really like!