I am a chemical operator, for a major chem plant. I operate a Olifins unit. Pretty good process, its continuous, if that means anything to anyone. Been doing it since 1993, I work a 4 days on 4 days off sch. Rotating from night to days. Its pretty nice, of course I have a regular gym memership, but we have a surprisingly nice gym at work. Its convenient , 12 hr days are long, but when the gym is at your door when you walk out the gate, It makes all the difference in the world.