If you walk into any commercial gym these days, it will be filled with all sorts of different machines and free weights. Chances are, there is a different machine for every muscle in your body and a large array of dumbbells, barbells, kettlebells and other assorted pieces of free weight equipment that can target any muscle or movement you can think up. So the question is, which is best? Depending on who you talk to, you will find people claiming that using all machine weights is best, people claiming only using free weights is best and people in between saying a mixture of both is best. Let’s take a look at the difference between the two and find out which one is best for YOU.