Instruct: Classify Amazon reviews into positive or negative sentiment
Query: HOORAY! IT MAKES GOOD SENSE AND IT WORKS!

Dr. Markham's book and eating plan is an effective, easy and safe approach to health, fitness and weight loss and management. I am a disabled woman who has tried every diet plan that comes on the market and have never been able to successfully lose and maintain my weight loss until now. As a result of Dr. Markham's book and protein-rich way of eating, I have lost over 80 pounds and have kept it off. You can see my "before" and "after" pictures on page 107 of the book. Dr. Markham's book simplifies the weight-loss process and makes it easy to understand. As an added benefit to my weight loss, I have become much more ambulatory and have much more energy. I owe my quality of life to Dr. Markham and his book. What have you got to lose? (Excuse the pun)