I currently work 3-12's Night shift and it is tough, mentally, physically and emotionally. Yes you get the 3-4days off during the week but you are drained. My schedule varies week to week. After getting off of work I try to sleep but then so many people call the phone so that wakes you up for most of the morning. I can say I am able to set appointments but that means that I have to stay awake longer until I get to the appointment so now I have been up for 14-16 hours. When I do sleep I really crash not waking until late in the evening and then I still do not feel fully recharged.
If my 12's are back to back I sleep for about 3-5hours and then I am back up to do the same thing over again. My appetite is poor cause I do not eat but once a day when I am working cause I am so tired from working. If I do eat I run into Dunkin Donuts or Burger King and grab something then I fall right to sleep.
Now that I am in school full time the energy level is totally drained. Cause my waking hours is spent doing school work, going to class, trying to have a somewhat normal life on my off days. I have recently been diagnosed with some ailments that never affected me before, so maybe working nights has helped me with early diagnoses.
But one good thing that came from nights is that I am losing weight.
I have worked 8hr shifts but only part-time and I had no problem with that.