My dad got started smoking while in the army. They would give smokers a five minute break, but everyone else was supposed to keep on working. A generation later, my best friend enlisted in the army, and nothing had changed. She became a smoker to avail herself of those breaks that the smokers received. She was an x-ray technician, and moving people around on the table was hard on her back. She started smoking to get the breaks because of damage that was happening in her back. No break, 5 minutes or otherwise, for an aching back.