Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Earlier types were better

I don't know if its a different formula, but I do remember taking the old school ATP three years ago and noticing a difference. I don't quite see the same results as last time. I used to be able to rock the gym for 2 hours without feeling tired. Sure my muscles wouldn't work, but I was still ready to tear them up some more. Not sure what happened, but I want the old stuff back!!!