Most jobs have pretty simple schedules. You go in during the morning, leave at night, sleep, and come back the next morning. Nursing is not "most jobs." When you're a nurse, you could be working the night shift one day, and working a day shift another day. It really does a number on your circadian rhythm.
Once you get a big girl job, you'd think you'd have a more consistent schedule, going in the same time every week and getting used to the admittedly strange hours you need to work. If you're a nurse, you know that theory does not work in practice. It feels like you're working more than you're not working, and waiting for the dreaded bi-weekly schedule makes you feel like you're still a waitress at a restaurant.
If you or someone you love has fallen victim to the night shift, you may be entitled to financial compensation. That, or you might enjoy the following nursing memes.