You can spend hours on end viewing online ab machines, infomercials, magazine ads and want to be knowledgeable about the ones that really work. It can probably help you if you check out a few consumer reviews and look into articles like the one you are currently reading. But, you should also look into each machine and search for the one that you like the best. The most important aspect of any fitness program is the amount of times that you use it. It makes things even better when you find a kind of exercise that you like doing or can stand to do. In this article we are going to talk about some of the features of the more popular ab machines.