The technique involves performing an exercise until failure, then immediately reducing the weight and continuing the exercise.
This allows you to continue working the muscle even after it has reached fatigue.
Drop sets can be done with any exercise that uses weights, including dumbbells, barbells, and machines.
They are particularly effective for building muscle endurance and increasing the number of muscle fibers recruited during a workout.
To perform drop sets, start with a weight that you can lift for 8-12 reps.
Perform the exercise until failure, then immediately reduce the weight by 20-30% and continue the exercise.
Repeat this process for 2-3 sets, or until you can no longer lift the weight.