 But one thing that struck me, I'd heard about this product for quite some time, and I'm very skeptical to buy anything over the phone. However, I'm in insurance, and having turned over to the radio station and listened to someone that said that their knees were sore and dysfunctional and that they had gotten a benefit, I thought, well, what is the risk of one month's purchase? So I called specifically for my knees, and so I had that plus the benefit of losing weight.