WELL ...main thing about shoulders and keeping them healthy is one who trains and all of us have done the heavy presses the too heavy heaving side laterals,the db bell presses all the way to top delts or to side head or any other form to stimulate a tad of growth,after 5/10/20 yrs training and wearing and tearing the shoulder and joint one has nothing but limited range of motion and if totally shot the ability to even hold a baby or carry groceries is a chore.so after you get over the heavy is 'best'theory and you build decent enough delts 'back off'and train smarter.cause bad shoulder means shitty chest workouts,and stuck using limited range of motion and machines

for periods of time.