Im on WBB1, and when I do the workout, let's say the bicep and tricep day for example, I start out on the Military Press and end on the Hammer Curls. I try to lift as much as I can to complete my desired reps and sets for that exercise, then move on. When I do this, it gradually destroys my arms (or the muscles I'm working for that day) by the third or fourth exercise. This prevents me from lifting as much as I could from the later exercises because my muscles are just very tired.
So, does that matter? Should I change up my routine each week where I do the same exercises, but in a different order? Should I not lift as much? Or am I doing it all correctly, and just keep truckin.