Instruct: Classify Amazon reviews into positive or negative sentiment
Query: ASTONISHINGLY SUCCESSFUL DIET PLAN!

The Heller plan is truly sensational in that it REALLY works! The increased energy level I've experienced within the last 3 months is phenomenal; since I traded carbs for veggies and fruit I've lost the equivalent of 33 lbs! (I'm now at a comfortable 170 (which is actually in correct proportion to my 6 foot frame). Highly Recommended to all who seek a healthful, ENERGIZING way to lose weight which REALLY works!