Seen all the commercials by Chuck Norris and Christie Brinkley.  Looked like fun and could give a challenge.  I tried the Total Gym I have at work and it does a lot of exercises.  I adjusted the height of the machine to make the harder as I advanced my workouts.  I could isolate different areas of my body during workouts so I could focus on just my biceps, triceps, shoulders, etc.  I injured my shoulder two years ago and didn't think I could do most of the exercises, but I slowly graduated from low to high and found I could really challenge myself in no time.  The machine is great for repetitions...