I'm making a new routine for the first time in months, and trying totally new stuff to build up some more size.
Currently, I don't know when I should do my shoulders,back, and chest.
My lay-out is a 4 day a week system..
Working chest, back, shoulders, legs and arms.
So far I had working both bis/tris in the same day but I could mix it up.
Also which exercises do you recommend the most for chest/shoulders/back? I've been doing core workout (squat, bench, deadlift, etc) for the last few months so i'm out of the loop.