If your goal is hypertrophy–building muscle–there are a great many variables to consider. And on some level, they all matter.
Consider the Muscle and Strength Training Pyramid below. Putting aside nutrition–which has its own pyramid–this pyramid covers six (well, eight) variables that affect our training.
While the topics of sets, reps and how many days a week to train do get a lot of air time, a great many of you are still spending too much time worrying about the stuff at the top of the pyramid.
Stuff that frankly, unless you have your fundamentals in order, just don’t matter.