Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: The Best

I have been using exercise videos for twenty years. I have nearly 100. That includes Insanity, Billy Blanks, Supreme 90, lots of Cathe Friedrich, and many more. I was very surprised that I was so sore after doing the Week 1 dvd for the first time. I chose to back off and spend two weeks working up to completing that disk because I don't like being sore, and there is no shame in taking your time. After that, I was able to work to my maximum on each disk without being sore following it. After completing Week 4, I tried a Cathe routine that had always given me trouble. I blew right through it.On the surface, this does not seem so cardio-based as most of the videos on the market. Insanity is rush-rush, hurry-hurry. Weider x-factor st is more strength-based, but you will be blowing at the end of each routine. On the off-days, you can pop in your old favorites that you used to think were doing you good.No equipment needed -- no step, no dumbbells, no ball. This is my all-time favorite.