I have been doing the same workout for 4 months now.Chest and tri's,back and bi's,shoulders,legs.I do 2 on 1 off. I am very happy with the results so far(of course everyhting needs improverment). Anyway I am wondering if it would be beneficial to change routines? I am thinking,bi's and tri's,shoulders and chest,back, legs. Does it help to try and trick muscles? Tell me what you guys think about the routine? Thanks.