I just have a lot of questions about this product. The ab shocker (which, in this case, also comes with bicep shockers AND a glute shocker!) sends an electrical impulse through your muscles, stimulating them to contract, which sounds both painful and pointless. Contracting a muscle, especially if you're not actually moving your body or carrying a load to do it, isn't going to give you a ripped, lean body. And some of the promises made by these products were just over the top. This option (currently sold for $20 on Amazon) promises that 12 minutes of use is equal to running 1500 meters or swimming for 30 minutes, which I'm just not buying (in any sense of the word).