My buddy in high school/college lived/worked on his family's dairy farm. They milked at 4:30 am and at 4:30 pm. There were many nights (mornings actually) we would roll in and he would say, "shit, might as well put on my coveralls and start getting the barn ready." I occasionally worked on my uncles dairy farm in the summer when I was in high school. I loved working on the farm, hated milking though. Milking is a tough way to make a living. Precisely why there are very few dairy farms left on the country side.