Some of my workmates only shower once a day, in the evening.
I just don't feel clean or awake without the morning shower, especially in the summer, after sweating all night.
I suppose that it depends on what type of work you do, but I can't get by with just sticking my head under the tap in the morning, and rushing off to work.
This was drummed into me when I was a kid, and in the Army.
It would depend on what skin type a person has of course, and I tend to have slightly oily skin.
