Recently, my husband started a new contract (read: temporary) job. Now, unlike me, he is a morning person. Just naturally wants to get up at the buttcrack of dawn and start doing things. I am naturally a night owl, and think nothing of staying up til past midnight, doing things.
This job is swing shift. Poor guy has had a bit of a struggle changing his sleep patterns. And it's a very physical job, too. He's pushing heavy carts, lifting "cages" full of packages, running sorting machines, and unloading trucks.
There are, of course, multiple benefits to this job ...