Every once in a while (not often) I might get into a rut for whatever reason (injury, run-down feeling, things going on in life, etc) where drive/focus might be lacking. (In my 42 years of training I never took off more than a week, (except once, missed 2 weeks on my honeymoon back in 1989).
Not feeling it this past week, run-down, lots of work stuff, interrupted sleep, etc). Next week Ill run my "minimalist" routine in my home gym (Still pushing the heavy weights) but stripped down a bit. A good maintenance routine for me at my age. In mid 50's, I cant really expect to put on any more mass (actually that would be stupid) but this keeps me in business of maintaing what I have, and really thats my goal these days. hang on to my muscle as I age. On shoulder day, the third exercise is "Dumbbell side/rear lateral raise super-set).