I just have to rant. For 20+ years I worked the graveyard shift with no problems. In the last few years I've moved to working mostly the pm shift, which is much better for my training. This past week I did 3 graves' in a row. 4 days later, I'm still paying for it. I haven't been able to train all week. I'm still exhausted. What is the deal?? Am I a wus, or just getting old, or what??