Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Wow.

I just got this last week, did the exercises for the second time yesterday. All I can say is OUCH. I'm am in decent shape, but this really challenged me, and in a short amount of time (less than 20 min). I can't tell about results, but I've just started. There is really some great information here, I'm anxious to see if this works. I think that the ideas about circulation seem to make sense to me so I'm hopeful I will have good results.