I'm with the compound exercise group. Warmups are especially important for shoulders and neck. A pinched nerve, tear or pull in the area will wreak havoc with your daily activities.
yes, i agree with these guys. warmup with atleast 2-3 sets on a mil press or regular press to start it out. do some giants 2-3working sets, followed by a few sets of heavy shrugs, and a set or 2 of side cable laterals or whatever they're called.
ya a do a decent warmup for my rotator cuff and shoulders cause i am scared of hurting them
external rotations - 15 reps for each arm
internal rotaions - 12 reps for each arm
shoulder horn exercises - 2 sets 15 reps
shoulder rotations and stretches