"People have lunch behind the mike as well because there's nobody to relieve them"
I know that in many places in Sweden (And allso some places in Norway at certain times of the day), you have towers that are 1-man operated, not even a flight data assistant. I know that at Trollhättan/ESGT the controller work 8 straight hours without rest.
Luch is consumed in the hot seat. The traffic load is low at ESGT, but still.........