Dumbbell Back Workout Circuit This Circuit includes a dumbbell workout for back muscles. You will go through the exercises from top to bottom of the list above completing 5 sets and doing 100 repetitions of each movement is using low weights (5lbs) or 3 sets of 25 repetitions if using a higher weight. Note: this post contains affiliate links. This means that I may receive a small commission (at no cost to you) if you subscribe or purchase something through the links provided. You will …