What are some of steps of building large muscles? Maybe just eating a couple cans of tuna and some skinless chicken breast will make the difference, not to mention buying a spa membership and going a couple times a week for a light workout will do the trick? I really wish it was that easy, but I do have a few simple steps to help getting those big muscles. Compound Exercises are a must! Here are a couple of basic bodybuilding questions. What is going to isolate more muscle fibers? A bench press or cable cross over? A military press or lateral raise?