Yes, 8 hour shifts are better for accomplishing more things in the daytime, BUT I feel like all I do is work. At the same time, 12 hours shifts make me feel like I work, sleep, then do it all over again. However, its only for a few days a week versus what feels like every damn day. I actually do 8 hour shifts, but often do 12s if a night shift nurse can do the same. I don't mind it.