Instruct: Classify Amazon reviews into positive or negative sentiment
Query: LIFE CHANGING!

The best diet & excercise book I have ever read- it has changed the way I eat & the way feed my family. After only a few weeks I have more energy & am already feeling healthier! Its an easy to follow lifestyle change. If you are looking for a quick fix/crash diet book- this is not for you- if you want to change the unhealthy eating habits for life (and find out why they are so bad for you) grab a copy of this book! I am grateful for the knowledge and only wish I had this book sooner.