It helps if you are a night person. I worked swing shifts for 28 years, then went to straight mids. The swing shift sucked but I loved the midnights. I sleep just fine during the day without the shades drawn. I normally stayed up until 3-4 am even when I was unemployed or working afternoons, (4-12pm). I once got fired for tardiness when I had to be there at 6:00am. If light bothers you, a towel over yer head works better than window shades. The only serious vehicle accident that I had was my fault, going through a stop sign at 5:45am, raining & dark, & brain still asleep, from having to get up so early. I'm much better at that hour if I've been up all night.