While I was in the Marines, I served as a combat correspondent, deploying twice to Afghanistan with 1st Battalion, 6th Marine Regiment. While I had a fair amount of training on how to do my job, it never included instruction on how to set up my kit so I could work comfortably and effectively.
Benjamin Franklin nailed it when he said, "Fatigue is the best pillow." True story, Benny. There's nothing like pushing your body so far past exhaustion that you'd willingly, even longingly, take a nap on a concrete slab.