Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Sneaky pain reliever

I was not sure if this would work. As I said it's sneaky. I put it on my back and no pain, on my hip yesterday, no discomfort. I am taking physical therapy at present for knee replacement. My other sensitive areas are back and hip. A couple of the exercises irritate my hip that I have to stop. Not so yesterday. My back usually starts hurting midway through my treatment. Not so yesterday. The sneaky part of the review, I did not realize until I started writing this review that I did not have pain in the usual areas until now. Sneaky. I gave it four stars because I do feel the capsacin in my mouth, when I use it one more that one place.