Instruct: Classify a given review into positive or negative sentiment.
Query: waste of money

I was hoping for some sort of relief from this contraption. Possible even be able to stretch out the the chest muscles. Waste of money for me. It is painful or at very least extremely uncomfortable. The yellow part that the spine rests in, is very stiff. I've tried using this several times, read and re-read the directions, and it still suc*s !!!