THE 2-MINUTE RULE FOR HOW TO BUILD MUSCLE IN THE UPPER BACK

Pick out your dumbbell and phase ahead with one particular leg to enter a break up stance, leaning into your front leg and a little bending the front knee. Keep the dumbbell at your side together with your arm entirely extended, inserting another arm with your front knee or around the back of a bench.Plant your left knee and hand firmly on a bench,