Super sets are an advanced strength and weight-training technique whereby you work the same muscle group by doing two different exercises with little rest in between. For example, if you want to work your chest muscles (pectorals), you could do a set of dumbbell flyes followed immediately by a set on the chest press machine.

For the second exercise in a superset, you should decrease your usual weight amount by about 25 percent. Why? The first exercise starts to "pre-exhaust" the targeted muscles. If you don't lower the weight for the second set, your muscles might be too tired to do a full set of reps correctly, and you may compromise your desired results.