The shoulder muscles however should not just be worked in isolation and thankfully most exercises that do build the shoulders also work out the arms, chest and back too. As always I want to warn against over-training a particular body part like the shoulder out of disproportionate muscle gain but most because of the higher risk of injury. The shoulder is a complex joint and many weight lifters come to grief working on this area creating sore stiff shoulders and often damaging or completely tearing the rotator cuff which will set you back weeks to months to heal!
“Reg Park’s theory was that first you have to build the mass and then chisel it down to get the quality; you work on your body the way a sculptor would work on a piece of clay or wood or steel. You rough it out””the more carefully, the more thoroughly, the better”” then you start to cut and define. You work it down gradually until it’s ready to be rubbed and polished. And that’s when you really know about the foundation. Then all the faults of poor early training stand out as hopeless, almost irreparable flaws. [..]