I know why free weights are better than machines and that is because you use a lot more muscles to steady the weight on free weights. Machines also only focus on a specific area. I know this question comes up a lot but just not in this way. Machines like the bowflex, and the new ones comming out, seem like they would work. Muscle comes from resistance not from what you're lifting. What makes the bowflex stand out to me is that it is not steady, and you can't use one arm more than the other like on regular machines. You have a total workout like lifting free weights. I know there are downsides, like the cost, buying all the additions, weight cap, and it just doesn't seem manly. I personally don't have one, i go to the gym. I'm just posting this to see if i'm right or if there is some other factor i'm not even thinking about. Most comments aren't supported with anything saying why its not as good. If people gain muscle from wrestling, pushing large objects, lifting, etc... why can't the bowflex work? The only time i can see it actually being less of a workout is when you can go beyond the weight resistance they have. Give solid reasons why its not as good as free weights.