Instruct: Classify Amazon reviews into positive or negative sentiment
Query: in the words of the late James Brown....I FEEL GOOD!!! na na na na na

I started taking these pills last week, i havent noticed any side effects. On the huge plus side ive been eating healthier and going to the gym 5-6 times a week as of the last 2 months. Ive noticed that before I would only go to the gym about 4 times a week but now i have an added boost of energy and im able to go on the days were i would have normally been resting and i get in 3 and a half hour workouts like nothing. I have lost 40 lbs in the past almost 2 months.