Sunshine31 - I want to say that I have used resistance training equipment and I have noticed a difference from using them in just a few weeks.
The resistance training bandsare designed with varying degrees of thickness as well as colors. They thicker the band is the more difficult the exercises will be.
They will also be colored coded which will tell you the level of resistance in each band. I think that it is a good idea to buy a variety of resistance bands that range from light to heavy resistance so that you can vary the intensity of your workout.
Buying resistance bands that have long tubes with padded handles are actually the most comfortable to use. You really don’t need a personal trainer because many of these resistance band kits come with instructional DVD’s.