
What does a dropset do? It increases the intensity and volume for a targeted muscle group. This will force extra blood into the muscle. With your normal set you would reach 10 or 12 reps or however many it would take you to get to failure, then stop and rest. When you incorporate dropsets you are taking the muscle to failure and then past it, with more reps at a lighter weight. By doing that, you increase time under tension. More time under tension, with good recovery, good supplements, and good nutrition, will lead to more muscle growth and size.
By incorporating dropsets into your workout routine it will get you out of the training plateau or the stagnant spot that you're in. If you want to transform and you really want your body to change then you can incorporate these into your workout routine or fitness plan.