Instruct: Classify a given Amazon review as either positive or negative.
Query: Husband noticed tighter butt!

No kidding--I did all three butt exercises about 2-3X per week and didn't tell anyone. One night my husband said, "I don't know what you're doing, but I swear your butt is smaller." That's the best compliment I've ever gotten to keep motivated! What is really encouraging is that I'm a fitness fanatic and pretty mean and lean, so for him to notice something was different means it's the truth! I've memorized the moves, and I do a few while the coffee is brewing, waiting in line anywhere...I really don't care what people think about that. I've gotten some people to join in during particularly long waits!