Pump your Back!
To understand how to properly pump your back, you need to know that there are deep and superficial muscles of the back. The first layer is formed by the widest and trapezius muscles, the rhombus muscles and jagged muscles lie more deeply.
Pumping the muscles of the back is better not to combine with the training of other large muscle groups, for example, pectoral muscles. You can combine with exercises for the shoulder girdle (delta), press. Isolated back exercises should always be performed after the base exercises.
Distribute your back training as shown in the picture for a month’s training, and watch for the growth results!