What are some disadvantages of working with free weights?

What are some disadvantages of working with free weights?

Gary Brazina (Sports Medicine Physician) gives expert video advice on: What are some advantages of weight machines? and more...

The biggest disadvantage of free weights is if you're using a free weight that's a little too heavy, you start to use other muscle groups to help stabilize your body. You can injure your back doing curls or injure your neck and back trying to do a bench press where you're arching because you're trying to push too much weight, or even get a <a href="http://www.videojug.com/expertanswer/shoulder-and-upper-arm-injuries-2/what-is-the-treatment-for-a-dislocated-shoulder">dislocated shoulder</a>.